Preheat the oven to 425 degrees. Place the 4 Pita flatbread circles on a greased cookie sheet. Lather the Pita flatbread with a part of the olive oil/garlic mixture. Place all of the ingredients equally on each Pita flatbread. Brush the remaining garlic/olive oil mixture on the toppings. Now if you want cheese, bacon or tomatoes place them on the pizzas now. Sprinkle with red pepper flakes and freshly ground black pepper. Bake for 10-12 minutes.