01 - Set oven to 475°F and heat a pizza stone or baking sheet, if available.
02 - Roll pizza dough into a 12-inch circle on a lightly floured surface.
03 - Transfer dough to parchment paper for easy handling.
04 - Spread pizza sauce evenly over the dough, leaving a 1/2-inch border.
05 - Scatter shredded mozzarella cheese evenly over the sauce.
06 - Distribute pepperoni, crumbled sausage, chopped bacon, and diced ham evenly across the cheese.
07 - Arrange sliced red onion over meats, if desired.
08 - Sprinkle grated Parmesan, dried oregano, and red pepper flakes over the top.
09 - Transfer pizza with parchment paper onto preheated stone or baking sheet and bake for 12–15 minutes until crust is golden and cheese is bubbling and browned.
10 - Remove pizza, let rest for 2–3 minutes, then slice and serve hot.