Loaded Omelets

Name: Loaded Omelets
Ingredients: 4 teaspoons olive oil, divided; 8 large eggs; 2 tablespoons milk; 1/2 teaspoon salt; 1/4 teaspoon ground black pepper; 8 slices turkey bacon, cooked until crisp (in the microwave or skillet); 1/2 cup sliced green bell peppers; 1/2 cup sliced mushrooms; 1/2 cup diced tomatoes or leftover tomatoes; 1/4 cup chopped green onions; 1/2 cup shredded Swiss cheese, optional