Marinate Chicken: In a large bowl, combine the chicken cubes, kosher salt, black pepper, chili powder, and olive oil. Toss everything together until the chicken is generously coated in flavor; let it sit for about 10 minutes.

Assemble Skewers: Take your soaked wooden skewers and start threading them. Begin with a peach wedge, followed by chicken, then jalapeño, repeat one more time with chicken and finish with another peach piece.

Preheat Air Fryer: Set your air fryer to 375°F (190°C) to heat up while you prepare the skewers.

Brush and Place: Lightly brush the assembled skewers with olive oil to prevent sticking, then place them into the air fryer basket in a single layer.

Cook the Skewers: Air fry the skewers for 11-12 minutes, flipping halfway through. They're ready when the chicken reaches an internal temperature of 165°F, and the peaches are beautifully caramelized.

Prepare the Glaze: While cooking, mix together the peach preserves, olive oil, soy sauce, apple cider vinegar, Dijon mustard, minced garlic, kosher salt, black pepper, and red pepper flakes in a medium saucepan. Heat until well combined.

Glaze and Serve: Once the skewers are cooked, generously brush them with the peach glaze for an added punch of flavor. Serve warm and enjoy!