Very good. Had the nacho supreme which is made with corn chips. Ask questions, staff is very helpful. I had no issues at all.
I called before going in and was told that while they do not have a gluten-free menu, they have many things they can make gluten-free and will happily use clean utensils and dishes during prep and cooking. Chips are in a dedicated fryer as are the taco shells, and everything I ordered was very tasty. Be sure to let them know of your allergy, but they are very accommodating.