Prepare the Fennel. Trim the fennel bulbs, removing the stalks and fronds. Slice the bulbs into wedges, ensuring they are similar in size for even cooking.
Seasoning. In a bowl, toss the fennel wedges with olive oil, garlic powder, salt, and black pepper. Ensure each wedge is coated evenly with the seasoning.
Air Fry to Perfection. Preheat your air fryer to 400°F. Place the seasoned fennel wedges in a single layer in the air fryer basket, allowing proper air circulation. Cook for 15-20 minutes, turning them halfway through until golden brown and tender.
Parmesan Finishing. In the last few minutes of cooking, sprinkle Parmesan cheese over the fennel. Continue cooking until the cheese is melted, and the fennel reaches the desired crispiness.
Garnish and Serve. Transfer the roasted fennel to a serving platter, and garnish with fresh herbs like parsley for a burst of color and added freshness.