Place the chickpeas, pepper, onion, squash, courgettes and apricots into a slow cooker and season with salt and freshly ground black pepper. Heat the oil in a frying pan, then fry the garlic and spices until fragrant, about one minute. Add the passata, honey and harissa, then bring to a boil.
Pour the sauce over the vegetables, cover with the lid and cook on high for four hours.
Season to taste with plenty of salt and freshly ground black pepper. Tear in most of the mint or coriander leaves, stir through, then scatter the remaining leaves over the top. Drizzle with a little more oil and honey, then top with spoonfuls of yoghurt. Serve with couscous.