Preheat your oven to 425°F (220°C).
Remove the leaves and stem from the cauliflower, keeping the head intact.
Rinse the cauliflower under cold water and pat dry.
In a large bowl, mix olive oil, garlic powder, paprika, salt, and pepper.
Carefully coat the cauliflower with the oil mixture, ensuring even coverage.
Place the cauliflower on a parchment-lined baking sheet.
Roast in the preheated oven for 25-30 minutes, until golden brown.
Check for doneness by piercing with a fork; it should be tender.
Remove from the oven and let it cool slightly.
Garnish with fresh parsley before serving.