There are a few ways to make store bought chicken salad better. One way is to add in some chopped up celery and grapes. This will give the salad a little bit of sweetness and crunch. Another way is to add in some chopped up onions and green peppers. This will give the salad a little bit of sweetness and crunch. Finally, you can add in some chopped up apples and almonds. This will give the salad a little bit of sweetness and crunch.