This delicious recipe comes from Southern Living, June 2007.
Arrange pecans in a single layer on a baking sheet.
Bake at 350° for 5 to 7 minutes or until lightly toasted.
Cool pecans on a wire rack 15 minutes or until completely cool.
Whisk together mayonnaise and next 5 ingredients in a large bowl; stir in pecans, chicken, celery, and onion just until blended.
Stir in grape halves, if desired. Garnish, if desired.