Southwestern Avocado-Bell Pepper Quiche Cups

Preheat the oven to 375 degrees F (190 degrees C). Line a baking sheet with aluminum foil.

Whisk eggs, yogurt, egg whites, and taco seasoning in a large bowl until smooth.

Gently stir avocado, Cheddar cheese, onion, and green chiles into the bowl with the egg mixture. Do not over-stir; keep avocado in diced form.

Place red, green, yellow, and orange bell pepper halves on the baking sheet. Spoon egg mixture into the bell pepper halves, filling them to just below the edges.

Bake in the preheated oven until egg mixture is just set, 35 to 40 minutes. Remove from oven and let cool slightly, 5 to 10 minutes.