Preheat oven to 480 F (or per package instructions, based on which pizza crust you are using). For Ciro & Sons crust, I use a 12-inch nonstick pan.
Prep all of your toppings and set aside.
Prepare GF pizza crust according to package directions.
Pre-bake pizza crust according to package directions. For Ciro, I bake the plain crust for about 10 minutes, then remove to top with ingredients.
Place veggies on crust, spreading evenly.
Top with Parmesan Reggiano and then with Mozzarella.
Add olives and pepperoni and return to oven.
Bake until cheese is melted and starting to turn golden.