2 sizes GF pizza crust, 12" and 14". Never had a problem with bone in wings either. Best GF pizza bang for your buck. Can't recommend enough.
Not sure if you can get the wings or sandwiches gluten free. We had the pizza and it was delicious. They have only one size and there is a minimal up charge for the gluten free crust. It is not a dedicated kitchen but they go to great lengths to keep cross contamination minimized to zero.