Preheat Oven:
Preheat to 425°F (220°C).
Line a baking sheet with parchment paper or foil for easy cleanup.
Season the Cauliflower:
In a large bowl, toss cauliflower florets with olive oil, salt, pepper, garlic powder, and paprika until evenly coated.
Add the grated Parmesan and toss again to coat the florets with the cheese.
Roast:
Spread cauliflower in a single layer on the prepared baking sheet.
Roast for 25–30 minutes, flipping halfway through, until the edges are golden brown and crispy.
Serve:
Sprinkle with fresh parsley before serving if desired.
Serve hot as a side dish or enjoy it as a snack with your favorite dipping sauce!