Preheat your oven to 375°F (190°C) and lightly grease a small oven-safe baking dish with the olive oil.
In a non-stick skillet over medium heat, add the ground turkey, diced onions, and diced bell peppers.
Cook the mixture until the turkey is browned and the vegetables are tender, breaking the meat into small crumbles as it cooks.
Add the fresh spinach to the skillet and stir for 1 minute until just wilted, then season 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 bowl, whisk together the whole eggs and egg whites until smooth and well combined.
Pour the egg mixture over the turkey and vegetables, ensuring the liquid fills all the gaps in the dish.
Bake for 20 to 25 minutes, or until the eggs are fully set in the center and the edges are lightly golden brown.