Cut, deseed, and dice the red and green peppers and onion.
Preheat the oven to 375 degrees. Spray a 3-quart baking dish with non stick cooking spray. Set aside.
Spray a skillet with non stick cooking spray; add green and red peppers, and onions.
Cook over medium heat for about 3-4 minutes or until soft.
In a large mixing bowl, whisk eggs, milk, salt and pepper until blended. Add diced ham, cheese, and cooked veggies. Whisk until combined. Pour mixture into prepared baking dish.
Bake for 22-25 minutes or until puffy and set. ( Remove eggs from the oven before they are completely set since the heat from the dish will cause them to continue to cook for a few minutes once they are removed from the oven. Eggs are best when they aren't over cooked. )
Slice into 6 even pieces. Serve with your favorite toppings.