Peel the sweet potato and cut into small 0.5-inch cubes to ensure they cook quickly and evenly.
Heat 0.25 tbsp of olive oil in a non-stick skillet over medium-high heat and add the sweet potato cubes.
Sauté the potatoes for 8 to 10 minutes, stirring occasionally, until they are tender and slightly browned on the edges.
Add the remaining 0.25 tbsp of olive oil and the chopped kale to the skillet, cooking for 2 minutes until the kale is wilted and bright green.
In a medium bowl, whisk together the whole eggs, liquid egg whites, sea salt, black pepper, and garlic powder until well combined.
Lower the skillet heat to medium and pour the egg mixture directly over the roasted vegetables.
Gently scramble the eggs with a spatula for 3 to 4 minutes until they are just set and fluffy.
Remove the skillet from the heat, sprinkle with the crumbled feta cheese, and serve immediately.