In a medium bowl, whisk together chili powder, garlic powder, onion powder, cumin, salt, lime juice, olive oil, and water.
Add the seasoning to a bowl of chickpeas and to your bowl of cauliflower florets. Take two baking sheets lined with foil or a silat sheet and cover with the seasoned chickpeas and cauliflower.
Roast for 30-35 minutes, stirring occasionally during cooking, until chickpeas are slightly crispy and cauliflower is tender. Remove from oven and set aside.