Preheat the oven to 350°F. Coat the cups of a muffin tin with nonstick cooking spray.
Divide diced bell pepper, bacon crumbles and chopped spinach evenly into the prepared muffin tin cups.
Whisk eggs. I like to do this in a quart-size glass measuring cup for easy pouring. Add the chives, salt, and black pepper, and stir to mix.
Pour the egg mixture into each muffin tin cup dividing evenly.
Bake for 18-22 minutes or until the eggs are completely cooked.
Serve warm.
