To assemble the pizza, preheat the pizza oven to 700 degrees F; alternatively, preheat your kitchen oven to the max 550F. Stretch the dough out thin. Top with some white sauce, then provolone and mozzarella cheeses. Finally, add the steak and peppers.
Bake for 4-5 minutes if using a pizza oven, or 6-7 minutes if using a kitchen oven, until spotted, browned, and gorgeous.
Remove from the oven and top with parsley. Serve hot.