Preheat oven to 450 degrees F.
Microwave potatoes according to package instructions. Place cooked potatoes on a baking sheet and lightly press down on each potato with a spatula. Add a spoonful of marinara sauce, sprinkle cheese and add 1 slice of pepperoni.
Bake for 5-8 minutes or until cheese is melted. Remove from oven, garnish with fresh parsley and enjoy!