01 - Whisk together eggs, milk, salt, and pepper in a medium bowl until fully combined and uniform in color.
02 - Fry bacon in a large non-stick skillet over medium heat until crispy. Transfer to paper towel-lined plate, crumble when cool, and reserve 1 teaspoon drippings in pan.
03 - Add bell pepper to reserved drippings and sauté 2 minutes until softened. Add spinach and cook 1 minute until wilted.
04 - Reduce heat to low. Melt butter in skillet, pour in egg mixture, let sit 30 seconds, then gently stir with spatula until softly set.
05 - Sprinkle cheddar, crumbled bacon, and green onions over eggs. Fold gently until cheese melts and eggs reach desired consistency. Serve immediately.