Best Low Carb Fast Casual Restaurant Franchises US 2026

Written by: Marc Howland, Co-Founder and CEO, Breadless

Key Takeaways

1. The U.S. ketogenic diet market is projected to grow from $3.39 billion in 2025 to $5.25 billion by 2033, which increases demand for low-carb fast casual options.
2. Breadless ranks #1 with 13g net carbs, 28g protein, and nutrient-dense supergreens scoring 1,000 on the ANDI scale, so it outperforms competitors in macros and micronutrients.
3. Top chains like Jersey Mike’s, Five Guys, and Chick-fil-A offer bunless and bowl customizations that keep net carbs under 20g while still supporting strong franchise profitability.
4. Breadless provides superior nutrition with 76% fewer net carbs than Sweetgreen and 60% fewer calories, which supports sustained energy and weight management.
5. Explore Breadless locations and franchise opportunities to connect with the top-ranked low-carb fast casual concept.

Top 10 Low-Carb Fast Casual Franchises for 2026

1. Breadless

Breadless rethinks fast-casual dining by replacing processed bread with nutrient-dense supergreens like Swiss chard and collard greens that score a maximum 1,000 on the Aggregate Nutrient Density Index (ANDI). The signature Jerk Chicken & Mango sandwich delivers 280 calories, 28g protein, and just 13g net carbs. Leafy greens wrap the filling and help support steady energy without sharp insulin spikes.

As a Whole30 Approved® brand with a 100% gluten-free menu, Breadless has earned recognition from Forbes, Eater, and Fast Casual Magazine as one of the “Top 20 Fast Casual Brands to Watch.” The brand currently operates six locations and has aggressive expansion plans, so franchise opportunities are available.

Customer stories include a Type 1 diabetic who reported a 100-point blood sugar drop after eating Breadless daily, which highlights the potential health impact compared to traditional fast food.

2. Jersey Mike’s Subs

Jersey Mike’s supports low-carb eating with the popular “Sub in a Tub” option, which serves customizable proteins, cheese, vegetables, and condiments in a tub instead of bread and keeps net carbs under 20g. The franchise model features $18.5K initial fees, total investment ranging from $194K to $870K, and strong average unit volume around $1M. Cold cuts and grilled options provide substantial protein while removing bread-based carbs entirely.

3. Five Guys

Five Guys excels in keto customization with bunless burger options. The Bacon Cheeseburger with Double Lettuce Wrap, ordered “All The Way” minus ketchup, provides 791 calories, 64g fat, less than 5g net carbs, and 44g protein. The Hot Dog No Bun, made from high-quality beef, is customizable with keto-friendly toppings like cheese, bacon, and vegetables. The franchise requires higher investment but delivers consistent returns in premium locations.

4. Chick-fil-A

Chick-fil-A offers extensive low-carb options with lettuce wrap substitutions available at no extra cost. The 8-piece Grilled Chicken Nuggets contain just 1g net carbs, while the Grilled Cobb Salad with nuggets (without dressing or crispy toppings) contains 10g net carbs. Popular breakfast hacks include the Hash Brown Scramble Bowl without hash browns, which has 1g net carbs, and the Egg White Grill without the English muffin, which also has 1g net carbs. The franchise model offers strong brand recognition and proven profitability across diverse markets.

5. Chipotle Mexican Grill

Chipotle dominates the build-your-own bowl category with keto-friendly customization. The Keto Salad Bowl, prepared by skipping tortillas, rice, and beans and choosing protein, vegetables, and guacamole, provides 570 calories, 42g fat, 7g net carbs, and 31g protein.

Morning Consult’s 2026 fast casual dining research reports positive net scores for Chipotle on “fiber-rich meal to feel full” and “smaller, protein-packed meal”. The franchise model requires significant investment but offers strong returns and powerful brand recognition. Discover how Breadless delivers superior nutrient density at a location near you if you want an even lower-carb alternative.

6. Freshii

Freshii focuses on customizable bowls and salads with global flavors. The Mediterranean Bowl includes grilled chicken, feta, olives, cucumber, tomatoes, and fresh greens (excluding quinoa) for high protein and healthy fats with net carbs under 20g. Freshii operates more than 400 locations across over 20 countries as of 2025, with a strong focus on international franchising. The brand offers accessible franchise opportunities with moderate investment requirements.

7. Moe’s Southwest Grill

Moe’s provides Mexican-inspired bowls that work well for low-carb customization. Burrito Bowls built with a lettuce or cauliflower rice base, grilled chicken or steak, cheese, guacamole, sour cream, and salsa while skipping tortillas keep net carbs under 20g. The franchise model offers competitive investment terms and strong brand recognition in the Tex-Mex segment.

8. Panera Bread

Panera leads in healthy fast-casual perception and offers several low-carb options. The Greek Salad with feta cheese and Greek dressing (no croutons) provides healthy fats and protein with net carbs under 20g. The Half Green Goddess Cobb Salad with Chicken offers 280 calories, 16g fat, 8g net carbs, and 21g protein. Morning Consult’s 2026 analysis reports a net score of 11 for Panera on “healthier choice than typical fast food”.

9. Shake Shack

Shake Shack offers premium burger customization with lettuce wraps. The ShackBurger in a lettuce wrap, available via their secret menu, significantly reduces carbohydrate content to fit keto guidelines under 20g net carbs. The franchise model targets premium locations with higher investment requirements but benefits from strong brand loyalty and pricing power.

10. CAVA

CAVA specializes in Mediterranean bowls with fresh, nutrient-dense ingredients. CAVA earned high net scores of 12 for “healthier choice than typical fast food” and 6 for “meal tailored to my diet needs” in Morning Consult’s 2026 study. CAVA Group operates over 360 Mediterranean fast-casual restaurants across the U.S. as of 2025. Their Greens & Grains Bowl without grains provides customizable protein and vegetable combinations with net carbs easily kept under 20g.

Nutrition Comparison: Breadless vs Other Healthy Chains

This nutrition comparison highlights how Breadless matches competitors on protein while sharply reducing net carbs and calories, which supports steady energy and weight control.

Breadless delivers comparable protein while dramatically cutting both carbs and calories, which makes it a strong choice for sustained energy and weight management.

Franchise Costs and Profitability for Low-Carb Chains

Franchise investment levels and earning potential differ widely across low-carb concepts, so investors should compare entry costs with average unit volume and brand momentum.

*Breadless financial data was not publicly available at the time of publication. Contact the Breadless franchise development team for current investment requirements.

Breadless offers franchise opportunities with high growth potential in the expanding keto market, which positions franchisees to benefit from the health-conscious dining trend.

2026 Low-Carb Hacks at Fast Casual Restaurants

Simple ordering strategies can keep net carbs low at almost any fast-casual restaurant while still delivering satisfying meals.

1. Bunless Everything: Request lettuce wraps for burgers, sandwiches, and wraps, since this single swap can remove 30 to 50 grams of carbs from a meal.
2. Bowl Base Swaps: After removing bread, focus on the base and choose lettuce, spinach, or cauliflower rice instead of regular rice or grains to cut another 20 to 40 grams of carbs.
3. Protein Doubles: With carbs minimized, add extra meat, chicken, or eggs to increase satiety and reduce the chance of energy crashes between meals.
4. Sauce Strategy: Pick oil-based dressings, guacamole, and cheese instead of sugary sauces so you avoid hidden carbs while still getting flavor.
5. Skip the Sides: Pass on chips, bread, and fruit cups, which often add most of the carbs without much extra protein or fiber.

High-Protein, Nutrient-Dense Low-Carb Chains

Panera Bread ranks #1 on Cozymeal’s Top 15 Healthiest Fast Food Chains list for 2026 and offers low-calorie salads with fresh vegetables and lean proteins. Even top-ranked chains often rely on conventional lettuce with near-zero nutritional value, which creates a gap in nutrient density. Breadless closes that gap by using supergreens that score 1,000 on the ANDI scale instead of standard lettuce. The National Restaurant Association’s 2026 What’s Hot Culinary Forecast identifies proteins as add-ons for nutrition as a key trend, so high-protein, low-carb franchises that emphasize nutrient density are well positioned for continued growth.

FAQ: Best Low-Carb Fast Casual Franchises

What are the lowest net carb options at fast casual restaurants?

Breadless offers one of the lowest net carb meals with its signature Jerk Chicken & Mango sandwich, followed by Five Guys bunless burgers (under 5g), Chick-fil-A grilled nuggets (1g), and Chipotle keto bowls (7g). Most chains can stay under 20g net carbs with careful customization, while Breadless builds low-carb principles into every menu item from the start.

What are the franchise costs for keto-friendly chains?

Initial franchise fees range from $10K for Chick-fil-A to higher levels for premium brands, with total investments spanning from $194K to $870K for Jersey Mike’s and $1.4M to $2.3M for Chipotle. Breadless offers franchise opportunities that aim to capture the growing keto market, and interested investors can request current cost details directly from the brand.

Which is the healthiest low-carb fast food chain near me?

Breadless ranks highest for nutrient density with its maximum-ANDI supergreens, a 100% gluten-free menu, and Whole30 approval. Traditional chains like Sweetgreen and CAVA offer healthy options but often deliver significantly higher net carbs, typically in the 36 to 55 gram range versus Breadless at much lower levels. Breadless also removes 150 to 220 empty calories per meal compared to many bread-based alternatives while providing richer micronutrient content.

What are the most profitable low-carb franchises?

Chick-fil-A leads in average unit volume at $8.7M but has limited availability and intense competition for franchise spots. Breadless presents strong ROI potential with lower entry barriers and positioning in the rapidly growing keto segment. The brand’s Top 20 Fast Casual recognition and health-focused positioning align with consumer interest in functional nutrition and sustained energy.

How do I eat low carb at fast food restaurants?

Focus on protein and vegetables while skipping bread, rice, beans, and sugary sauces. Order bunless burgers, salad bowls without grains, and grilled proteins with cheese and avocado. Most chains will accommodate lettuce wraps and bowl customizations on request. Breadless removes the guesswork by designing every menu item around low-carb principles from the beginning.

Ready to try the difference? Locate your nearest Breadless restaurant and experience a low-carb menu built for both flavor and performance.

Conclusion

The top three low-carb fast casual franchises for 2026 are Breadless (#1), Jersey Mike’s (#2), and Five Guys (#3), and each brand offers distinct advantages for health-conscious guests and franchise investors. Key benefits include sustained energy from low net carbs, convenient portability for busy lifestyles, and strong ROI potential in the expanding $3.39 billion U.S. keto market.

Start your low-carb journey at a Breadless location near you or learn about franchising with the category leader that is redefining fast-casual dining with nutrient-dense supergreens and bold, chef-crafted flavors.