Preheat air fryer to 350 degrees F (175 degrees C). Place @peach{1%} halves flesh side down in the basket of the air fryer. Cook for 6 minutes. Meanwhile melt @butter{2%tablespoons}. Stir in brown @sugar{1%teaspoon} and @cinnamon{1⁄4%teaspoon} until @sugar{1%teaspoon} has dissolved. Using tongs, flip peaches over so that they are flesh side up. Brush @butter{2%tablespoons} mixture over the top, filling the pit cavity with any excess. Cook for 6 minutes more. Let peaches cool for 5 minutes. Top each half with a scoop of ice cream. Serve immediately.