They have a GF crust (you pick the toppings). When you tell them you have an allergy they wash hands, sanitize counter, wash hands again, put new gloves on, and get fresh toppings from the fridge.
They will also do the same with a dairy allergy. THEY DO NOT USE SEPARATE OVENS (hense the one missing heart).
There's not really a "GF menu" but they do have a crust, and you pick your toppings (meats, veggies, sauce), it's like a subway but pizza. So you know and can see what exactly you're putting on your pizza.
— Somewhat
— No gluten-free information on the menu
— Most/All
— Excellent