Whisk eggs, cook in butter over medium-low heat, and fold into thirds. Season with salt and pepper.
Cook eggs in butter, add cheese before folding, and season with salt and pepper.
Sauté bell peppers, onions, and tomatoes and pour in whisked eggs, cook, fold, and season.
Sauté potatoes and onions in olive oil, pour in beaten eggs, cook until set, and flip to cook both sides.
Sauté spinach, onions and tomatoes, and add whisked eggs. Cook, add feta and olives, fold and season.
Whisk eggs with chopped herbs, like chives, and parsley, and cook in butter, fold, and season.