Pat the fish dry with some paper towels. Mix the paprika, chilli powder, garlic powder, salt and pepper together. Rub the mixture into the fish and refrigerate
Heat the oil in a large pan. Fry the fish, about 2 and half to 3 minutes on each side. Depending on how thick the fish is
Remove the fish from the pan and you can keep it warm in the oven. Using the same pan add the garlic and fry for 30 seconds. Only add more oil if required. Add the chilli powder, paprika, lemon and black pepper seasoning. Add a few drop of water if required and cook for 30 seconds. Add the peppers, chillies, and onion and cook for a couple of minutes, until tender but with a slight crunch. Mix in the tomato paste and cook for a minute. If you are adding tomatoes you can add them now until they shrink a little
Season with salt and pepper
Place the fish on a plate and top up with the pepper, tomato mixture
Serve on a bed of mashed potatoes and a green salad