Heat a large non-stick skillet over medium-high heat and drizzle with olive oil. Sauté onions and peppers until tender, about 4-5 minutes. Sprinkle with garlic powder, oregano and salt and pepper to taste
Stir in spinach and cook until wilted, about 1-2 minutes. Divide sautéed veggies between four plates and top each plate with an egg cooked to order. Sprinkle each plate with a tablespoon of feta before serving.
For added protein, top with two eggs instead of one.