Mix the spices, salt, and oil together thoroughly.
Put the cauliflower florets into a large roasting dish. Drizzle to spice mixture on to the cauliflower, and mix trying to cover as much of the cauliflower as possible.Arrange the cauliflower in in one layer. And roast in the oven for 20 minutes
Remove from the oven and add the tinned tomatoes, 200 ml of water, the chickpeas, and a pinch of sugar, and stir. Return to the oven for 10 minutes.
Stir in the spinach and return to the oven for 5 more minutes.