Gluten Free bread is wonderful at Firehouse Subs in Denton at Rayzor Ranch. The GF bread is not thick like most places, you can actually taste the filling and not be overwhelmed with too much bread. I am so happy they started carrying gluten free bread. I had the Turkey Bacon Ranch on gluten free bread with a pickle and some Lay's chips and a sweet tea. I did not get sick at all. I would highly recommend this location for a gluten free allergy, they were very knowledgeable about the allergy and the process needed to prevent cross contamination. And the staff was super friendly even in a very busy rush hour.