Preheat air fryer to 400 degrees.
In a small bowl quickly whisk together oil, minced garlic, lemon juice and salt and pepper.
In a large bowl add broccoli and then drizzle with lemon and oil mixture. Toss until broccoli florets are thoroughly coated.
Add broccoli to the air fryer basket in a single layer (optional: line your air fryer basket with a parchment paper liner or silicone baking liner or spray air fryer basket with cooking spray). Top with feta cheese.
Air fry for 6-7 minutes or until broccoli is crispy and feta cheese is golden brown.