Preheat your oven to 425°F (220°C) and place the rack in the middle position.

Remove any damaged or wilted outer leaves from the cabbage. Cut the cabbage into quarters, removing the core. Then, cut each quarter into 1-inch thick slices.

In a large bowl, combine the olive oil, minced garlic, smoked paprika, salt, black pepper, and red pepper flakes. Toss the cabbage slices in this flavorful mixture, ensuring they are evenly coated.

Spread the seasoned cabbage slices in a single layer on a baking sheet. Make sure not to overcrowd the pan, as this helps the cabbage to roast and not steam. If needed, use two baking sheets. Place the baking sheet in the preheated oven and roast for about 20-25 minutes, or until the cabbage edges are brown and crispy, and the center is tender.

Once the cabbage is done, remove it from the oven. If desired, sprinkle with grated Parmesan cheese and fresh chopped parsley for an extra burst of flavor and a touch of freshness.

Serve your roasted cabbage as a delightful side dish alongside grilled chicken, steak, or any protein of your choice. It's also excellent as a vegetarian option or even as a healthy snack.