Preheat your oven to 375°F (190°C) and lightly grease a small oven-safe baking dish with a touch of oil.
In a large skillet over medium heat, add the olive oil and sauté the ground turkey, diced onion, and red bell pepper until the turkey is fully browned and the vegetables are tender.
Place the shredded potatoes into the bottom of the prepared baking dish, pressing them down slightly to form an even base layer.
Spread the cooked turkey and vegetable mixture evenly over the top of the potato layer.
In a medium mixing bowl, whisk together the eggs, sea salt, black pepper, garlic powder, and dried oregano until well combined and slightly frothy.
Pour the egg mixture slowly over the turkey and potatoes, ensuring it distributes evenly throughout the dish.
Bake for 25 to 30 minutes, or until the eggs are completely set in the center and the top is a light golden-brown.
Remove from the oven and let the casserole rest for 5 minutes before slicing into portions.