Slice the onion and bell pepper, and cut mushrooms and bacon into bite-sized pieces.

Heat olive oil in a pan and sauté onion and bacon until the onion turns translucent.

Add mushrooms and bell pepper to the pan, season with salt and pepper, and cook until softened.

In a bowl, whisk together eggs, milk, salt, and pepper.

Grease an oven-safe dish with olive oil, layer the sautéed ingredients, sprinkle pizza cheese, and pour the egg mixture over.