Included on the regular menu is an option to go bun-less or have a lettuce wrap! The food was excellent and they informed me their fries are fried in a fryer alone. They are only seasoned with salt and oil. Highly recommend for a meal where you feel "normal" and can eat among your friends.
I got the lettuce wrap for my celiac daughter and it was great. The server understood how she couldn't have meat that had been fried where a bun MIGHT have been and it was a great eating experience as someone who has celiac disease.
You can get a burger or chicken sandwich plain or on lettuce. There is a dedicated fryer for the fries - regular and sweet potato. The staff is friendly and always takes the time to make sure our order is grilled without cross contamination with the buns. They are on a separate part of the grill.