This is just about the tastiest fasting food I know how to make. On days when you're not having oil, you can stew the vegetables in a little vegetable broth.
It goes well with couscous, pita bread or Turkish bread (pide).
Cut the pumpkin into thick slices, remove the seeds and the fluff that the seeds hang from, peel the slices. Dice what is left and weigh it. It should weigh about one pound. If it's much more, adjust the other quantities, especially spices. You should never skimp on spices in this recipe.
Dice the zucchini and the aubergine. Leave the skin on or not, as you like. Cut the onions into rings.
Heat the oil in a thick-bottomed pan. Fry the onions for a minute, then add the rest of the vegetables (except the chickpeas), all the spices and salt. Stir it around until everything is mixed well, very hot and covered in oil, then reduce the heat, cover and let it stew for 20 minutes. Stir occasionally.
While the vegetables are stewing, put the chickpeas into a colander or sieve and rinse them under cold running water. Drain well.
Stir the chickpeas into the stew and let it simmer for another 10 minutes.
Taste; adjust the flavour with salt, pepper, harissa, lemon juice, or whatever else it seems to need.