01 - Preheat oven to 425°F. Line a large baking sheet with parchment paper.
02 - Remove any damaged outer leaves from the cabbage. Slice the cabbage from top to stem into 1-inch thick steaks.
03 - Arrange the cabbage steaks in a single layer on the prepared baking sheet.
04 - Brush both sides of each cabbage steak with olive oil.
05 - Sprinkle evenly with salt, pepper, garlic powder, and smoked paprika.
06 - Roast for 25–30 minutes, flipping halfway through, until the cabbage is golden brown and crispy on the edges but tender inside.
07 - Transfer to a serving platter. Garnish with chopped parsley and serve with lemon wedges, if desired.