Preheat the oven to 425 degrees F.
To mix up the meatballs, combine the chicken, breadcrumbs, garlic powder, dil, oregano and a big pinch of salt and pepper. Mix in the egg, feta and parsley until just combined. Roll into 1.5 inch meatballs - you want them to be uniform in size.
Place the tomatoes, peppers and shallots on a baking sheet. Drizzle all over with olive oil and sprinkle with a big pinch of salt and pepper. Sprinkle with garlic powder. Toss well to make sure everything is coated.
Nestle the meatballs on the sheet pan, in between the peppers and tomatoes.
Put meatballs all over tomatoes and peppers.
Roast for 25 to 30 minutes, then flip and roast 5 to 10 minutes more, until the meatballs reach an internal temperature of 165 degrees F.
Top with fresh parsley and feta cheese when the pan comes out of the oven.
Serve with rice, pita bread, on sandwiches or however you’d like!