Clean, wash and cut the peppers into strips. Clean, wash and cut the leek into strips. Peel garlic and cut into fine cubes. Heat 2 tablespoons of oil and fry the bell peppers and leek for about 5 minutes, turning.
Season with salt, pepper and garlic. Pour on 100 ml water, bring to the boil and braise vegetables for another 10 minutes. Wash the fish, dab dry. Season with salt and turn in flour. Heat 2 tablespoons of oil in a second pan.
Fry the fish chops for 2-3 minutes on each side. Drizzle with lemon juice. Arrange fish and vegetables.