Cut into large chunks zucchini, pepper and sweet potatoes and place on a large pyrex container or casserole.
Add chickpeas. Finely chop the onions and garlic and add to chopped vegetables. Add the rest of the ingredients and mix well, add 4 tbsp of water, cover with tin foil or other and place in the oven at 180°C (350F).
Let it cook for about 1/2 hr or until sweet potatoes are cooked.