Although they do not have a separate menu my waitress was knowledgeable about gluten-free items on their menu. They have gluten free buns and all their BBQ sauces are gluten free. I did not get sick after eating here and I have celiac disease.
My waitress was very knowledgeable about gluten free and said "we have gluten free people in all the time" when I said I had a wheat allergy. The sweet potato fries are cooked in a separate fryer. They have gluten free buns, and she even recommended that I go sans onions, because they are fried in the same oil as gluten.