1. Bone the leg of lamb and cut it into 4 cm cubes. Marinate them in olive oil and herbs de provence for 1 hour.
2. Brush the chicken with olive oil and sprinkle with fleur de sel. Cook it on a rotisserie in the oven for 1 to 1.5 hours.
3. Peel all the vegetables and onions, and cut them into large cubes.
4. Sauté the pieces of neck in olive oil in a couscoussier, remove them and add all the vegetables to sauté except for the zucchini.
5. Cover with water, add salt, tomato paste, peeled tomatoes, saffron, paprika, Ras el hanout, and the pieces of neck.
6. Let it simmer for 1 to 1.5 hours, add the zucchini after 30 minutes of cooking and the chickpeas 20 minutes before the end of cooking.
7. Prepare the couscous by steaming it in the top of the couscoussier and rolling it several times, adding butter at the end.
8. Skewer the marinated lamb pieces alternating with one or two pieces of onions.
9. Cook them on a grill or barbecue.
10. Cook the merguez on a grill or barbecue.
11. Cut the chicken.
12. Serve everything accompanied by harissa (according to taste).