01 -
Boil the spaghetti following the package instructions.
02 -
Place a large skillet over medium-high heat and add the ground beef, red onion, mushrooms, and bell peppers. Cook until the beef is fully browned, then drain off any excess grease.
03 -
Season the mixture with Italian seasoning, onion powder, garlic powder, and seasoned salt.
04 -
Add a few pepperoni slices, most of the bacon crumbles, the pizza sauce, and the pasta sauce. Stir to combine and let it simmer gently.
05 -
Once the spaghetti is drained, add it to the skillet and toss everything together.
06 -
Pile on the mozzarella cheese and sprinkle over the remaining bacon, onions, olives, and pepperoni.
07 -
Bake the dish at 350°F for 10 minutes, then broil for 2–3 minutes to melt and brown the cheese.
08 -
Serve warm and enjoy!