Preheat oven to 450 degrees F.
Cover pizzas with cheese, 1 sack per shell. To each pizza, add about 1/2 teaspoon each of oregano, red pepper flakes and garlic powder. Bake until cheese is brown and bubbly, 8-10 minutes.
Grind olives in food processor.
Using a cake spatula or a rubber spatula, spread olives onto hot pizzas fresh from the oven, leaving a 4 inch wide circular space at the center of the pizza. Add roasted red peppers to the center of each pizza. Finished pizzas should look like vinyl records.