01 - Preheat oven to 375°F (190°C). Cook ziti pasta according to package directions until al dente, then drain thoroughly.
02 - In a large bowl, mix cooked ziti with marinara sauce. Spread half of the mixture evenly in a baking dish. Layer with half the pepperoni slices, black olives, and mozzarella cheese.
03 - Spoon the remaining pasta mixture on top. Finish with remaining pepperoni slices, olives, and mozzarella cheese.
04 - Bake for 20 to 25 minutes or until the cheese is bubbling and golden on top.