Mamma Mia does have GF pizza. You need to ask for GF pizza -- it takes about 20 minutes to make. The GF pizza is made in a separate pan to avoid touching any other regular pizzas (I guess there could be cross contamination but have not experienced that). They will put on any of the toppings they use on their regular. Caution: if you get their Rustico pizza, make sure you tell them you don't want eggplant -- the eggplant is pre-breaded.
— Somewhat
— No gluten-free information on the menu
— Most/All
— Excellent