Preheat oven to 400°F.
Arrange fish in a baking dish. Lightly dress with EVOO; season with salt and pepper.
Combine bread, garlic, oregano, parsley, red pepper, chili, olives and onions in a bowl and dress with just enough EVOO to lightly coat. Arrange topping all over the top of the fish and around the dish. Scatter feta around and over the bread layer. Bake fish 20-25 minutes. Serve with lemon wedges alongside.