Preheat your oven to 425°F (220°C) and line a large baking sheet with parchment paper.
Wash the head of cauliflower and cut it into evenly sized, bite-sized florets. Place the florets into a large mixing bowl.
In a small separate bowl, whisk together the olive oil, honey, curry powder, garlic powder, salt, and black pepper until a smooth glaze forms.
Pour the honey curry glaze over the cauliflower florets and toss thoroughly until every piece is completely coated.
Spread the coated cauliflower onto the prepared baking sheet in a single layer, ensuring they are not overcrowded so they roast rather than steam.
Roast in the preheated oven for 25 to 30 minutes, tossing halfway through, until the cauliflower is tender and the edges are golden brown and caramelized.
Remove from the oven, let cool for a few minutes, garnish with fresh chopped parsley, and serve immediately.