It may seem superfluous to roast a chicken specifically for a salad, but believe me: it's completely worthwhile (and you'll have extras for a sandwich, anyway). Here, the meat—torn from the bone—is mixed with butternut squash, oven-crisped jus-soaked croutons, grapes, and arugula, all swathed in cider vinaigrette.
Feel free to make the chicken in advance. It's just as tasty cold as it is room temperature or just a bit warm. The croutons are best fresh, though, as are the bits of squash, which gain complexity from being cooked in meat jus.