Wash and dice the potato into small 1/2-inch cubes to ensure even cooking.
Heat the olive oil in a non-stick skillet over medium heat until shimmering.
Add the diced potatoes to the skillet and cook for 8-10 minutes, stirring occasionally, until they are golden and crispy on the outside.
Push the potatoes to the side of the skillet and add the ground turkey sausage, diced red onion, and bell pepper.
Break up the sausage with a spatula and cook until it is browned and the vegetables have softened.
In a small bowl, whisk together the large egg, egg whites, sea salt, black pepper, and garlic powder.
Stir the fresh spinach into the skillet and cook for 1 minute until it is just wilted.
Pour the egg mixture over the sausage and potatoes, scrambling gently with a spatula until the eggs are fully set and fluffy.