Preheat the oven to 160 degrees top and bottom heat.
Cut the chicken breast into bite-sized pieces, season with salt and pepper and fry all over. Then keep warm.
Cut the zucchini into thin slices and fry on both sides. Add the crème fraîche, sugar, garlic (pressed), chives (cut into small rolls) and the granulated broth (not too much, otherwise the sauce will be too thin). Season to taste with salt and cayenne pepper.
Put the chicken breast fillet pieces in an ovenproof dish, pour the zucchini mixture over them and sprinkle with parmesan. If necessary, you can also tie the sauce beforehand. Then bake at 160 degrees for about 30 minutes.