DO AHEAD: Slaw mixture and dressing can be made 8 hours ahead. Cover separately and chill. No more than 20 minutes before serving, cut core from apple and cut apple into matchstick-size pieces.
Packed with crunchy cabbage, sweet apples, buttery pecans, tender shredded chicken and a zesty apple cider vinaigrette ... dinner or impressing guests, this salad is endlessly customizable ...