Preheat your oven to 375°F and lightly grease a small oven-safe baking dish with a touch of olive oil.
In a medium skillet over medium-high heat, add the olive oil and ground turkey sausage, breaking it up with a spatula until browned and cooked through.
Add the diced bell pepper to the skillet and sauté for 3-4 minutes until softened, then stir in the baby spinach until just wilted.
In a mixing bowl, whisk together the eggs, egg whites, Greek yogurt, sea salt, black pepper, garlic powder, and onion powder until the mixture is smooth and well-combined.
Transfer the cooked 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 20-25 minutes, or until the center is set and the edges are slightly golden brown.
Allow the bake to cool for 5 minutes before slicing and serving.