1. Prepare Your Chicken: Start by ensuring your cooked chicken is cooled. Shred or dice the chicken into bite-sized pieces, aiming for consistency. Place the prepared chicken in a large mixing bowl.

2. Add the Fresh Produce: To the bowl with the chicken, add the diced red apple, dried cranberries, and finely diced celery. These ingredients bring the signature crunch and sweet-tart flavors to the salad.

3. Whisk the Creamy Dressing: In a separate medium bowl, combine the mayonnaise, Greek yogurt (if using), fresh lemon juice, Dijon mustard, salt, and black pepper. Whisk these ingredients together until the dressing is smooth and well combined. The lemon juice brightens the flavors, and the Dijon mustard adds a subtle tang.

4. Combine and Mix Thoroughly: Pour the prepared dressing over the chicken and fruit mixture in the large bowl. Using a spatula or large spoon, gently fold everything together until all the ingredients are evenly coated with the dressing. Be careful not to mash the chicken or apples.

5. Stir in Nuts (Optional): If you are adding pecans or walnuts, gently fold them into the salad now. This ensures they maintain their crunch without getting soggy.

6. Chill for Best Flavor: Cover the bowl with plastic wrap and refrigerate the chicken salad for at least 15-30 minutes. This chilling period allows the flavors to deepen and meld, making the salad even more delicious.

7. Serve and Garnish: Once chilled, give the salad a final stir. Taste and adjust seasonings if necessary. Serve immediately, garnished with fresh parsley or chives if desired.