Preheat the oven to 425°F and line a baking sheet with parchment paper.
Put the cauliflower florets into a large bowl and drizzle them with the olive oil. Then sprinkle them with the curry powder, salt, and black pepper. Now, toss everything together until the cauliflower is evenly coated with the oil and seasonings.
Put the cauliflower on the baking sheet in a single layer.
Bake for 30 minutes or until tender. Then serve immediately to enjoy!