Preheat your oven to 375°F (190°C) and lightly grease a small oven-safe baking dish with a small amount of olive oil.
In a skillet over medium heat, add the olive oil and brown the turkey sausage until fully cooked, breaking it into small crumbles as it browns.
Add the diced red bell pepper to the skillet and sauté for 3 minutes until softened, then stir in the baby spinach until it just begins to wilt.
In a medium mixing bowl, whisk together the whole eggs, egg whites, sea salt, black pepper, garlic powder, and onion powder until the mixture is light and frothy.
Transfer the cooked sausage and vegetable mixture into the bottom of the prepared baking dish, spreading it out into an even layer.
Pour the egg mixture over the sausage and vegetables, ensuring everything is evenly distributed and submerged.
Bake for 20-25 minutes, or until the eggs are completely set in the center and the top is a beautiful golden brown.