Preheat the oven to 425 degrees F. Line a baking sheet with parchment paper.
Spread the cauliflower on a baking sheet in a single layer. Spray with olive oil and sprinkle the togarashi seasoning and a pinch of salt, tossing again to distribute evenly.
Roast for 20-25 minutes, flipping halfway through, until golden brown and crispy on the edges. Serve warm.