Preheat the oven to 400 degrees F.
Place sliced bell peppers (all colors) in a large mixing bowl. Add red onions. Season with kosher salt and pepper, 1 tsp za'atar, 1 tsp cumin and 1 tsp Aleppo chili pepper (keep the remaining za'atar for later). Drizzle with extra virgin olive oil. Toss to coat.
Transfer the pepper and onion medley to a large sheet pan. Spread in one layer. Bake in heated oven for 10 to 15 minutes.
Remove pan from oven briefly. Carefully make 6 "holes" or openings among the roasted veggies. Carefully crack each egg into a hole, keeping the yolk intact (it helps to crack the egg in a small dish to slide carefully into each hole.)
Return pan to oven and bake until the egg whites settle. Watch the yolks to see them turn to the doness you like (anywhere from 5 to 8 minutes).
Remove from oven. Season eggs to your liking. Sprinkle remaining 1 tsp za'atar all over. Add parsley, diced tomatoes, and a sprinkle of feta. Serve immediately!
