They actually make sure the GF crust is separated And ask you prior if you have an allergy. They have multiple options and offer suggestions for dietary reactions.
Safety
How confident are you that this establishment takes safety precautions against cross-contact?
— Very
Quality & Quantity
Is there a gluten-free menu?
— Gluten-free items are marked on the main menu
How much of the menu is available gluten-free?
— Most/All
How would you rate the taste and quality of the gluten-free food you tried?