How to Make It
Preheat the oven to 375°. In a large ovenproof skillet, heat the 3 tablespoons of olive oil until shimmering. Add the onion, season with salt and pepper and cook over moderate heat, stirring occasionally, until softened, about 5 minutes. Add the tomatoes and cook, stirring occasionally, until some of them burst, 5 to 7 minutes. Add the bell peppers and cook, stirring occasionally, until the peppers are softened and all of the tomatoes have burst, about 10 minutes. Remove from the heat and stir in ¼ cup of the parsley and 1 1/2 teaspoons of the za’atar. Season the tomato sauce with salt and pepper.
Using a spoon, make 4 wells in the tomato sauce, then crack an egg into each one; season with salt and pepper. Transfer the skillet to the oven and bake for 10 to 12 minutes, until the egg whites are just set and the yolks are still runny.
Meanwhile, in a small bowl, mix the yogurt with the cucumber, the 1 tablespoon of lemon juice, the sumac, mint and the remaining 2 teaspoons of parsley and 1/2 teaspoon of za’atar. Season with salt and garnish with za’atar. Drizzle the eggs with olive oil and garnish with parsley. Drizzle the tomato sauce with lemon juice. Serve with the cucumber yogurt.