Prepare the Chicken: Shred or cube the cooked chicken into bite-sized pieces.
Combine Ingredients: In a large mixing bowl, add the chicken, mayonnaise, diced celery, and a pinch of salt and pepper. Stir until well combined.
Adjust Seasoning: Taste and add more salt, pepper, or mayonnaise if needed to achieve your desired flavor and consistency.
Chill and Serve: Cover the bowl and refrigerate for at least 30 minutes to let the flavors meld. Serve chilled as a sandwich filling, in wraps, or as a topping for lettuce cups.