In a large skillet, cook and crumble sausage until browned. Drain and and return to pan.
Add pepperoni, Italian seasoning, garlic powder, and oregano. Stir to combine.
Add marinara sauce, water, and noodles to skillet. Bring to a boil, then cover and reduce heat. Simmer 12-15 minutes, or until pasta is tender.
Remove lid and and stir in ¾ cup of mozzarella cheese. Then sprinkle remaining ½ cup of cheese over top. Replace cover and let sit for 5-7 minutes, or until cheese is melted. Serve immediately.