Remove crescent rolls from the package and separate them. Place a piece of mozzarella on the wide end. Space about 4 slices of pepperoni out on the triangle. Roll them up so everything’s tucked neatly inside and set them on a baking sheet.
Beat the egg in a small bowl. Brush it onto the tops of the rolls.
Combine garlic powder, oregano, and basil in a small bowl. Sprinkle the seasoning onto the rolls.
Bake for 15 minutes or until golden brown.
Before serving, sprinkle with Parmesan cheese. Serve with warm pizza sauce or marinara.