Preheat your oven to 400°F for roasting the sweet potato and kale.
Wash the sweet potato thoroughly, then cut it into 1/2-inch cubes. Toss with half the olive oil, salt, and pepper.
Spread the sweet potato cubes on a baking sheet and roast in the oven for about 20-25 minutes, or until tender and slightly caramelized.
While the sweet potatoes roast, lightly toss the chopped kale with the remaining olive oil, salt, and pepper, and add it to the baking sheet during the last 10 minutes of roasting.
In a bowl, whisk together the whole eggs and egg whites until well combined and slightly frothy. Season with a pinch of salt and pepper.
Heat a non-stick pan over medium-low heat. Pour in the egg mixture and gently stir continuously with a spatula to create soft, fluffy scrambled eggs.
Once the eggs are just set and still moist, remove them from the heat.
Plate the scrambled eggs with a side of roasted sweet potatoes and kale, and serve immediately.