Heat some oil in a pan and then fry the meatballs in it until they are nicely browned on all sides.
In the meantime, heat a tablespoon of oil in a large pot and sweat the onion in it.
Then add the water with the saffron.
Next add most of the vegetables to the stew: the carrots, celery and tomatoes.
Add the Harissa, pepper and salt. Let this simmer for about ten minutes.
In the meantime, you can also steam the zucchini and the pepper. This will optimally preserve the flavour. If you don't have a steamer, you can also add them to the stew.
Bring water to the boil for the couscous. Then add the couscous and let it swell without adding any more heat.
Finally, add the chickpeas and the meatballs to the stew. Let them heat through for five minutes.
Then serve the couscous with the stewed vegetables and the meatballs. Finish with the steamed vegetables: zucchini and bell pepper.