Cut tomato and zucchini into thicker slices. Cut the pepper and eggplant into large pieces. Wash the fish and pat dry. Sprinkle with lemon juice and season with salt and pepper.
Heat 1 teaspoon of oil in a coated frying pan. Brown the fish on both sides and place in an ovenproof dish. Clean the pan. Heat 1 teaspoon of oil in it. Fry the peppers, zucchini and eggplant for about 5 minutes.
Season with salt and pepper. Place tomato slices and vegetables on the fish. Wash the herbs and chop finely. Mix breadcrumbs, parmesan, remaining oil and herbs and spread on the vegetables. Cook in the preheated oven (electric cooker: 200 °C/ convection oven 175 °C/ gas: level 3) for about 10 minutes.
Garnish as desired with lemon and herbs. Toast the toast bread and add to it.