Spray a medium skillet over medium heat with cooking spray, then spray the inside of a mason jar lid. Place mason jar lid in the center of skillet and crack an egg inside.
Top with half the pizza sauce, half the cheese, and half the pepperoni. Cover with lid and cook until egg white is set and cheese is melty, 4 to 5 minutes. Repeat with remaining ingredients. Top with Parmesan and oregano, season with salt and pepper, and serve.
Recipe by 5* trending recipes with videos at https://food.theffeed.com/2019/08/02/pizza-eggs/