Preheat your oven to 400°F and line a small baking sheet with parchment paper.
Peel and cube the sweet potato into half-inch pieces, then toss with 0.5 tsp of olive oil, a pinch of sea salt, and black pepper.
Spread the potatoes on the baking sheet and roast for 18-20 minutes until tender and golden brown.
While the potatoes roast, whisk together the 2 whole eggs and 1 cup of liquid egg whites in a medium bowl.
Heat the remaining 1 tsp of olive oil in a non-stick skillet over medium heat.
Add the diced red bell pepper to the skillet and sauté for 3-4 minutes until slightly softened.
Add the baby spinach to the pan and stir until just wilted, about 1 minute.
Reduce the heat to medium-low and pour in the egg mixture, stirring gently with a spatula to create soft curds.
Once the eggs are set but still moist, remove from heat and fold in the crumbled feta cheese.
Plate the scrambled eggs alongside the roasted sweet potatoes and serve immediately.