Pizza Hut has a GF crust made by Udi’s. Their website explains how they limit cross contamination but says to call. The store manager there is amazing - very kind, knowledgeable about cross contamination, and helpful. I found him to be the most reassuring of all the fast food places that a 13-year old boy wants to eat at.
And then the pizza itself was yummy!
— Very
— Gluten-free items are marked on the main menu
— Most/All
— Excellent