With the bottom rack in the lowest position, preheat oven to 450 degrees. Place dough in a greased 12 in pizza pan, then press and stretch dough out to a 10 in circle; prick w/a a fork and brush with olive oil. Bake on bottom rack 10 minutes.
Puree red peppers, tomato sauce, garlic, and black pepper ina food processor until smooth; spread over pre-baked pizza crust. Top pizza w/ feta, onions and olives; sprinkle w/oregano. Bake on bottom rack until crust is crisp and cheese begins to melt, 10 minutes.