Optional: Green onion slices and/or crushed red pepper flakes
Preheat oven to 400º F. Heat olive oil in large non-stick pan on medium-high heat. Crack eggs into pan, evenly spaced apart (they may end up touching each other). Immediately turn pan to low and cover. Cook eggs for 4–7 minutes depending on how runny you want them. Do not flip eggs over; remove from pan once cooked (this method of cooking is sunny-side up).
Place English muffins on a foil lined baking sheet. Evenly spread sauce onto each muffin half, top with cooked egg, mozzarella cheese and pepperoni. Sprinkle with salt and pepper.
Bake at 400º for 5 minutes, or until muffins are slightly toasted and cheese is melted. Remove and garnish with optional green onions and/or crushed red pepper flakes.