Boil the chicken for 10 minutes in a pan of water on medium high heat. Let cool and shred with a fork.
Meanwhile toast the chopped walnuts or pine nuts in the toaster oven for 6 minutes.
Chop celery and grapes, add to a large salad bowl.
Add in chicken, toasted nuts and organic lettuce leaves.
Once the dressing has set, fold into the salad and serve!