Preheat your oven to 375°F and lightly grease a small oven-safe baking dish with a touch of olive oil.
In a non-stick skillet over medium heat, add the olive oil and the ground turkey sausage, breaking it up with a spatula until browned and cooked through.
Add the diced red bell pepper to the skillet and sauté for 3 to 4 minutes until the peppers are tender.
Toss in the fresh baby spinach and stir for 1 minute until just wilted, then remove the skillet from the heat.
In a medium mixing bowl, whisk together the large eggs, egg whites, sea salt, black pepper, garlic powder, and dried oregano until well combined.
Transfer the sausage and vegetable mixture into the prepared baking dish, spreading it out into an even layer.
Pour the egg mixture over the sausage and vegetables, ensuring everything is evenly submerged.
Place the dish in the oven and bake for 20 to 25 minutes, or until the eggs are completely set in the center and the top is lightly golden.