Preheat your oven to 375°F (190°C).
Place the English muffin halves on a baking sheet, cut side up.
Brush each English muffin half lightly with olive oil.
In a bowl, mix the cooked and crumbled breakfast sausage with diced red and green bell peppers and chopped green onions.
Sprinkle a little shredded mozzarella cheese evenly over each English muffin half.
Evenly distribute the sausage and pepper mixture over the cheese on each muffin half.
Carefully crack one egg onto each English muffin half, keeping the yolk intact.
Sprinkle the remaining mozzarella and cheddar cheese over the top of each muffin half, around the egg.
Season each with salt and black pepper.
Bake in the preheated oven for 12 to 15 minutes, or until the egg whites are set and the cheese is melted and bubbly.
Remove from the oven and let cool for 2 minutes before serving.