Taste your cooked/shredded chicken, if it does not have adequate seasoning toss with garlic powder, onion powder and sea salt.
In a large bowl, combine chicken, celery, red onion and mayonnaise. Mix well.
Add additional mayo, as needed based on your own personal preference. I prefer extra mayo, roughly 1.25 cups total.
Gently fold in halved grapes and fresh chives.
Season with additional sea salt and fresh ground black pepper to taste.
Best served chilled but if you can't wait, no worries it's yummy freshly made too!