Place fish in a baking dish; surround with vegetables, olives, and capers.
Drizzle marinade over everything.
Bake 15–20 mins until fish flakes easily.
Garnish with parsley and serve.
Notes
Fold thin tail ends under the fish for even cooking.Great served over couscous or with crusty bread.Leftovers keep for 2 days in the fridge; reheat gently.Use a thermometer to ensure fish reaches 145°F.Pat fish dry before adding to the dish to prevent excess liquid.