Preheat your oven to 350°F and lightly grease six cups of a standard muffin tin with a little olive oil or avocado oil spray.
In a medium skillet over medium-high heat, add the olive oil and ground turkey. Break the meat apart with a spatula and cook until browned and cooked through.
Add the diced red bell pepper and chopped spinach to the skillet, sautéing for 2-3 minutes until the spinach is wilted and the peppers are slightly softened.
In a large mixing bowl, whisk together the whole eggs, egg whites, sea salt, black pepper, garlic powder, and onion powder until well combined and frothy.
Divide the cooked turkey and vegetable mixture evenly among the six prepared muffin cups.
Pour the egg mixture over the turkey and vegetables in each cup, filling them about three-quarters of the way to the top.
Bake for 20 to 25 minutes, or until the muffins have risen and the centers are firm to the touch.
Let the muffins cool in the pan for 5 minutes before using a knife to gently loosen the edges and remove them.