Brown beef and pork in a large pan.

Add chopped green pepper to the meat and continue to cook until the pepper is softened.

Pour in spaghetti sauce and simmer.

Cook macaroni separately according to package directions.

In a very large bowl, combine the cooked macaroni and the meat sauce.

Preheat oven to 350°F (175°C).

Grease a large baking dish.

Pour a layer of the macaroni mixture into the prepared baking dish.

Add a layer of sauce.

Sprinkle a layer of mozzarella cheese.

Sprinkle a layer of provolone cheese.

Add a layer of pepperoni slices.

Repeat the layering process until all ingredients are used, ending with a layer of mozzarella and provolone cheese.

Bake in the preheated oven for 1 hour, or until the cheese is melted and bubbly and the dish is heated through.