Preheat oven to 350 degrees F. Spray an 8x8 baking dish with nonstick cooking spray.
In a medium mixing bowl add the eggs, skim milk, garlic powder, salt, and pepper. Whisk together.
Add the hash browns to the baking dish in an even layer. Top with green pepper, onions, ham, and cheese. Pour the egg mixture evenly over the ingredients.
Bake 60 minutes or until the eggs are set in the center.
Note: If you are not baking until the next day cover the baking dish with plastic wrap and store in the fridge. Add 15 minutes of baking time.