Make the marinade by combining the oil, lemon juice, wine, oregano, onion powder, and garlic together in a bowl.

Place the wings in the marinade, and turn to coat. Cover, and place in the fridge to marinate for at least an hour or overnight.

The olive oil will solidify in the fridge so remove the wings from the fridge 15 minutes before cooking. Meanwhile, preheat the broiler to high and place the highest rack approximately 4-5" down from the elements.

Place the wings on a baking sheet lined with a rack. Season them with salt and pepper, and discard any remaining marinade.

Place the chicken under the broiler, and cook for 20 minutes or until cooked thoroughly, turning half way through the cooking time.

Transfer the wings to a serving platter, and garnish with crumbled feta cheese, fresh dill fronds, and chopped fresh mint.