Marinate the Fish:
1- In a large bowl, add all the marinade ingredients and whisk to a smooth paste.Now add the powdered spices and whisk everything evenly.Add the fish fillet to the marinade, using your hand evenly coat both the sides.
2- Cover the marinated bowl with a lid and refrigerate for an hour. (TIP: The more you marinade, the better the taste)Preheat the oven at 180 Celsius.
3- Baking the Fish .Line the baking tray with foil and spray evenly with oil.
4- Remove the marinated fish from the fridge and place them evenly with some gap on the lined baking tray.
5- Bake for 15 mins (Till the fish is evenly cooked)After 15 mins, set the oven to broiler setting .Place the cooked fish on the top rack of the oven and broil for 3-5 mins or till you achieve the desired charred look. (Please keep an eye as every oven is different and too much broil will burn the fish).
6- Remove the broiled fish from the oven (Now orange red in color with charred marks).Place freshly cooked fish on serving tray, sprinkle evenly with lemon juice and some cumin powder.Serve Hot.