Warm the olive oil in a large nonstick skillet over medium heat. Add the bell pepper and onion, and cook for 4 minutes until beginning to soften.
Stir in the spinach, tomatoes, oregano, salt, and pepper. Cook for 2 minutes until the spinach wilts.
Make four small wells in the vegetables and crack an egg into each well. Cover and cook for 5 to 7 minutes, until the whites are set and the yolks are still slightly soft.
Sprinkle with feta and parsley. Divide between bowls and serve warm.
Notes
Model-authored fallback: the supplied source is a Mediterranean breakfast gallery, not one unambiguous recipe card. This single skillet breakfast bowl is a coherent recipe aligned to the source identity.