Preheat your oven to 450 degrees f. and line a large baking sheet with parchment paper.
Carefully cut and remove the cauliflower core and discard, then break into florets.
Place your cauliflower florets into a large bowl.
Sprinkle with your seasonings and drizzle with the oil. Stir well to get all the pieces nicely coated.
Transfer to your prepared baking sheet and spread it into a single layer.
Roast until crisp-tender, and slightly golden brown, 25-30 minutes.
Garnish with parmesan and parsley, if desired, and serve.
Enjoy!