Lightly spray a 6 or 7” round baking dish with cooking spray.
In a large bowl, beat the eggs and milk with a fork. Add the ham, peppers, spinach, leek, cheddar, salt, garlic powder, oregano and pepper to taste. Stir to combine and pour into the baking dish.
Preheat the air fryer to 300°F. Place the pan in the air fryer basket and cook for 20-23 minutes, or until dish reaches the internal temperature of 160° F and the eggs are set in the center.