In a large bowl, stir the cumin, smoked paprika, onion powder, garlic powder, salt and pepper with the oil. Add the cauliflower and chickpeas. Use your hands to toss them in the spiced oil.
Roast the chickpeas and cauliflower until they are golden brown, about 25-30 minutes. Flip over the cauliflower and toss everything just over halfway through roasting.
You can also use them as a topping for store-bought naan or flatbread. Spread on hummus and then add the roasted cauliflower, crispy chickpeas and herby tahini.