Preheat the oven to 400°F (200°C).
Slice the cauliflower head into 1-inch thick slices, keeping the core intact to hold the slices together.
Brush both sides of the cauliflower slices with olive oil.
Season with garlic powder, paprika, salt, and pepper on both sides.
Place the slices on a baking sheet lined with parchment paper.
Roast in the oven for 20-25 minutes, flipping halfway through, until golden brown and tender.
Serve warm, garnished with herbs or sauce of choice.