Preheat your oven to 400°F and line a baking sheet with parchment paper.
Peel the sweet potato and cut it into small, even cubes for quick roasting.
Toss the sweet potato cubes with half of the olive oil and a pinch of sea salt on the prepared baking sheet.
Roast the potatoes for 20 to 25 minutes, flipping halfway through, until they are golden and caramelized.
In a small bowl, whisk together the egg whites and the whole egg until well combined.
Heat the remaining olive oil in a non-stick skillet over medium heat.
Add the fresh spinach to the skillet and sauté for 1 to 2 minutes until just wilted.
Pour the egg mixture over the spinach and cook, stirring gently, until the eggs are fully set and fluffy.
Plate the scramble alongside the roasted sweet potato cubes and enjoy immediately.