Preheat your oven to 400°F (200°C) and lightly grease a small oven-safe skillet or baking dish.
Finely dice the red bell pepper and red onion, then toss them in the skillet with olive oil, sea salt, black pepper, and garlic powder.
Roast the vegetables for 12-15 minutes until they are tender and slightly caramelized around the edges.
Remove the skillet from the oven, stir in the baby spinach until it wilts from the residual heat, and spread the mixture evenly.
Pour the egg whites over the vegetables, then carefully crack the two whole eggs on top, keeping the yolks intact.
Sprinkle the crumbled feta cheese over the top and return the skillet to the oven.
Bake for an additional 8-10 minutes until the egg whites are fully set but the yolks remain slightly runny.
Serve immediately, garnished with fresh herbs if desired, for a protein-packed start to your day.