If your air fryer needs to be preheated, preheat it to 350˚F.
Cut the bread into pieces that are sized to fit in your air fryer.
In a small bowl, mix together softened butter, roasted garlic, fresh herbs, and red pepper flakes until combined.
Slather the pieces of bread with the butter mixture evenly.
Place bread pieces in the air fryer in a single layer (you may need to work in batches to avoid over-crowding). Cook for 6 to 7 minutes.
If you are using cheese, stir together the cheeses in a small bowl. In the last 1 to 2 minutes of cooking, open the air fryer and sprinkle with cheese evenly. Cook the rest of the way.
Remove bread from air fryer, slice and serve.