Preheat your oven to 375°F and lightly grease a small oven-safe baking dish with avocado oil.
Place a skillet over medium heat and add the ground turkey sausage, cooking until browned and crumbled.
Add the diced red bell pepper to the skillet and sauté for 3-4 minutes until the pepper is tender-crisp.
Stir in the fresh baby spinach and cook for 1 minute just until the leaves have wilted, then remove from heat.
In a medium mixing bowl, whisk together the large eggs, liquid egg whites, sea salt, black pepper, garlic powder, and onion powder until well combined.
Transfer the cooked sausage and vegetable mixture into the prepared baking dish, spreading it into an even layer.
Pour the egg mixture over the top of the sausage and vegetables, ensuring everything is evenly submerged.
Bake for 20-25 minutes or until the eggs are fully set in the center and the top is slightly golden brown.