Preheat oven (electric cooker: 200 °C/circulating air: 175 °C/gas: see manufacturer). Drain the chickpeas. Clean, wash and cut the kale into bite-sized pieces. Clean, wash and cut the fennel into fine slices or wedges.
Onions peel and in fine cubes cut.
Rinse salmon fillet cold and dab dry. Place in an oiled ovenproof dish. Sprinkle with 1 tablespoon of oil and season with lemon peel, salt, pepper, fennel seeds and chilli. Bake in a hot oven for 10-12 minutes.
Heat 2 tablespoons of oil in a wok pan (or a large pan with a high rim). Brown the onions and well 2⁄3 fennel in it. Add cabbage and fry for about 5 minutes. Add the chickpeas. Add lemon juice and 200 ml water.
Simmer for about 5 minutes. Season to taste with salt and pepper. Arrange fish and rest of fennel on the vegetables.