In a bowl, whisk to combine the oney mustard marinade ingredients.
Debone and remove the skin and excess fat off chicken thighs if needed.
Chop the cabbage into 2-inch pieces.
Slice the apple into slightly thick pieces but still thin slices.
In a bowl, combine the cabbage, apples, and 1/2 c of the honey mustard marinade.
In a separate bowl, marinate the chicken with the remaining honey mustard marinade. - -- Season the chicken marinade to taste with salt and pepper.
Let both marinate for at least 30 minutes.
In one half of the air fryer basket, layer with chicken thighs. Place the cabbage and apple mixture on the other half of the air fryer. As the cabbage cooks, it will shrink. Layer the cabbage up or leave a little out if it can’t fit, and add more as it begins to cook and shrink. If there is not enough room in the basket for the chicken, cabbage, and apples, cook them in batches.
Air fry at 380 °F (193° C) for 14-18 minutes or until the chicken's internal temperature reaches 165°F (75°C).
Halfway through cooking, flip the chicken and stir the cabbage and apples. During the last 2-3 minutes, do this again. Add more time as needed until the chicken is roasted to your liking.