Preheat oven to 425°F (220°C)
Line a baking sheet with parchment paper
Wash and cut cauliflower into evenly sized florets
Place florets in a large mixing bowl
Drizzle with olive oil or melted butter
Add garlic powder, paprika, salt, and black pepper
Toss until the cauliflower is evenly coated
Spread florets in a single layer on the baking sheet
Roast until cauliflower becomes tender and golden
Flip halfway through cooking for even crispiness
Sprinkle parmesan cheese during the final minutes if desired
Garnish with chopped parsley and serve warm