Preheat your oven to 375°F and lightly grease a small baking dish with a mist of olive oil.
Place a skillet over medium heat and add the olive oil, followed by the ground turkey sausage, diced onions, and diced bell peppers.
Sauté the mixture for 5-7 minutes until the sausage is fully browned and the vegetables are tender.
Add the fresh spinach to the skillet and stir for 1 minute until just wilted, then remove the pan from the heat.
In a medium mixing bowl, whisk together the whole eggs, egg whites, nutritional yeast, sea salt, black pepper, and garlic powder until 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 top, ensuring all the ingredients are submerged.
Bake for 25-30 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.