Preheat oven to 350 degrees and prep a 9x13 baking dish with non-stick spray.
Add eggs and milk to a large mixing bowl and whisk together. Chop all veggies into bite sized pieces, stirring after adding each ingredient. Finally, add cheese and seasonings and stir well.
Pour egg mixture into baking dish. Bake for about 40 minutes, until egg whites are firm. Cool, cover, and store in the fridge.