In a large nonstick skillet, melt butter. Beat the eggs, chives, water, salt and pepper; pour into skillet. Cook and stir gently until eggs are set.
Top each muffin half with eggs, bacon, tomato and cheese. Place on a baking sheet. Broil 2-3 in. from the heat for 1-2 minutes or until cheese is melted. Garnish with chives if desired. Yield: 2 servings.