Preheat your oven to 425°F (220°C). Line a baking sheet with parchment paper.
In a large mixing bowl, toss the cauliflower florets with olive oil, ensuring they are well-coated.
Sprinkle garlic powder, paprika, salt, and black pepper over the cauliflower. Toss to distribute evenly.
Spread the cauliflower florets in a single layer on the prepared baking sheet.
Roast for 20-25 minutes, turning halfway through, until golden brown and crispy.
Sprinkle Parmesan cheese over the cauliflower during the last 5 minutes of roasting.
Garnish with fresh parsley before serving. Enjoy!