Preheat your oven to 400°F.
Dice the sweet potato into small cubes. Toss them lightly with olive oil, salt, and pepper.
Spread the sweet potato cubes on a baking sheet and roast in the oven for 20-25 minutes until tender and slightly crispy.
While the sweet potatoes are roasting, slice the chicken sausage into rounds.
In a non-stick skillet, add the chicken sausage slices over medium heat. Sauté until they get a crispy edge, about 5-7 minutes.
In a bowl, whisk together the 3 egg whites and 1 whole egg with a pinch of salt and pepper.
Once the sausage is slightly crispy, add the roasted sweet potato cubes to the skillet, stirring to combine.
Push the mixture to one side of the skillet and pour the egg mixture into the cleared space. Let it set briefly before gently scrambling the eggs, then mix them with the sausage and sweet potatoes.
Cook together for another 2 minutes, allowing all flavors to meld. Adjust seasonings as needed.
Serve hot and enjoy your protein-packed, crispy hash.