Preheat the oven to 425°F (220°C) for roasting.

Cut the cauliflower into florets, ensuring they are uniform in size.

In a mixing bowl, toss the cauliflower florets with olive oil, garlic powder, paprika, salt, and black pepper until well-coated.

Spread the cauliflower evenly on a baking sheet in a single layer.

Roast in the oven for about 30 minutes, or until the cauliflower is crispy and tender, stirring halfway through.