Preheat the air fryer: Set your air fryer to 350°F (175°C) and let it heat while you mix the dough. If your basket tends to stick, line it with parchment designed for air fryers.
Mix the dry ingredients: In a large bowl, whisk together flour, baking powder, baking soda, salt, sugar (if using), garlic powder, and black pepper.
Add the flavor boosters: Stir in the feta, parsley, dill, and chives.
Toss to coat the cheese and herbs in the flour mixture so they’re evenly spread.
Add the liquids: Pour in the beer and olive oil. Use a spatula to fold just until the flour is moistened. The dough will be thick and shaggy—avoid overmixing.
Shape the breads: Lightly oil your hands, then divide the dough into 4–6 mini rounds or oblong mini loaves, about the size of your palm.
Slightly flatten the tops so they cook evenly.
Prepare the basket: Lightly brush the tops with olive oil. Place the breads in the air fryer in a single layer with space between them. You may need to cook in batches.
Air fry: Cook at 350°F (175°C) for 12–16 minutes, flipping once at the 8-minute mark.
They’re done when the tops are deep golden and a toothpick comes out clean.
Finish and season: Brush with melted butter for extra flavor and shine. Sprinkle with a pinch of flaky salt if you like. Let them cool on a rack for 5–10 minutes before serving.
Repeat: If you have more dough, repeat with the remaining pieces.
Keep the first batch warm in a low oven while you finish.