Remove the cabbage’s damaged outer leaves. Cut it in half and then cut each half into 4-6 wedges making sure to leave the core intact.
In a small bowl, whisk together the olive oil, onion powder, garlic powder, salt, and pepper. Brush both sides of the cabbage with the mixture.
Heat the gas grill to medium-high (around 400°F). Make sure the grates are clean and lightly oiled to prevent sticking.
Place the cabbage directly on the grill. Cook for about 7-8 minutes per side without moving, until the cabbage becomes tender and has grill marks without burning.
Remove from the grill and transfer to a platter. Sprinkle chopped parsley on top.
Notes
Storage: Kept in an airtight container in the fridge, the cabbage will last for up to 3 days. You can reheat it in the microwave for a couple of minutes until warmed through.