Preheat oven to 450°F. Spread olive oil in a 10"X15" baking dish. Place pizza dough in baking dish and pinch edges together to make one large piece of dough. Press and stretch to fill pan.
Spread pizza sauce over the dough, leaving a border around the edge. Top with red pepper flakes, cheese, sausage, and green pepper.
Bake until crust is golden brown, about 25 - 30 minutes. Let cool slightly before cutting into squares to serve.
Make it your own: Toppings can be changed to your preference, such as mushrooms or pepperoni!