Preheat your oven to 375°F (190°C) and lightly grease a small oven-safe baking dish with a touch of oil.
Heat the extra virgin olive oil in a skillet over medium heat and sauté the diced yellow onion and red bell pepper until they are softened and fragrant.
Add the ground turkey to the skillet, breaking it into small crumbles with a spatula, and cook until it is browned and no longer pink.
Stir in the baby spinach until it just begins to wilt, then season the mixture with sea salt, black pepper, garlic powder, and dried oregano.
Transfer the cooked turkey and vegetable mixture into the prepared baking dish, spreading it out into an even layer.
In a separate small bowl, whisk together the whole eggs and egg whites until the mixture is uniform and slightly frothy.
Pour the egg mixture over the turkey and vegetables in the baking dish, ensuring the liquid fills all the gaps and covers the ingredients.
Place the dish in the oven and bake for 20-25 minutes until the eggs are completely set and the top is a beautiful golden brown.