In a large bowl, combine the shredded chicken, mayonnaise, celery, red onion, sweet pickle relish, Dijon mustard, lemon juice, salt, and pepper.
Mix everything until it is completely mixed.
If needed, add more salt or pepper.
Cover the bowl and put it in the fridge for about 30 minutes. This helps the flavors blend together.
Your Wawa chicken salad is ready to use.
Serve the chicken salad in a sandwich, on lettuce, or with crackers