Preheat your oven to 375°F (190°C) and lightly grease a small oven-safe baking dish with avocado oil.
In a skillet over medium heat, cook the ground turkey sausage until fully browned, breaking it into small crumbles with a spatula.
Add the diced red bell pepper to the skillet and sauté for 3-4 minutes until the peppers are tender-crisp.
Stir in the fresh baby spinach and cook for 1 minute until just wilted, then remove the skillet from the heat.
In a medium mixing bowl, whisk together the eggs, nutritional yeast, sea salt, black pepper, garlic powder, and onion powder 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, gently shaking the dish to ensure the eggs settle into all the crevices.
Bake for 18-22 minutes, or until the eggs are set in the center and the top is lightly golden brown.