Pizzicleta in Flagstaff. Hands down, it is the best!
Well, I'm generally not a fan of chain restaurants but Grimaldi's, which has several locations in Arizona, has the best pizza I've ever eaten. It's a thin, Neopolitan-style crust, great cheeses and other toppings, all baked at a high temperature in a coal-fired oven. Superb!
I just posted a vote for BOOM BOZZ in Chandler, but it should say IN GILBERT. It originated in Louisville, KY where they have 5 locations. YUMM NUMMY!!