For the best texture, avoid overcooking the chicken and allow it to cool completely before mixing with the dressing. Store the salad in an airtight container in the refrigerator for up to three days, keeping the walnuts separate and folding them in just before serving to preserve their crunch. You can customize the salad by swapping walnuts for pecans or almonds, adding extra Dijon mustard for more tang, stirring in a pinch of keto sweetener for a subtle hint of sweetness, or folding in diced cucumber or additional celery for extra crunch while keeping carbs low. This salad is intended to be enjoyed cold and should not be reheated.