Prepare the Chicken: Your first step is to get your cooked chicken ready. If you're not starting with pre-cooked chicken, you'll need about 2-3 chicken breast halves. You can bake chicken breasts until cooked through, or you can poach chicken until tender. For the quickest option, use an air fryer to cook chicken. An air fryer chicken breast cooks fast and stays juicy. If you have leftover chicken, this is the perfect time to use it. A whole roasted chicken or even shredded chicken from a store-bought rotisserie chicken works wonderfully. If using a whole chicken, make sure to remove the chicken from the bones. Let the cooked chicken cool slightly before dicing. You want to dice the chicken into small, even pieces. Aim for tender chicken. If you use canned chicken, just drain it well.
Combine Ingredients: Now, get a large bowl. Add your diced chicken to the bowl. Then, add the mayo (or Greek yogurt, or both), the finely diced celery, and the finely diced red onion (or green onion). Next, add the halved grape (sweet grapes work great here), the chopped pecan, fresh dill, fresh parsley, lemon juice, and dijon mustard.
Mix Well: Gently stir all the ingredients together. Use a spoon or spatula to mix until everything is well combined. Make sure the mayo or yogurt evenly coats all the pieces of chicken breast, vegetables, and fruits. You want the salad to be creamy and uniform.
Season: This is where you adjust the taste. Add salt and pepper to taste. Start with a small amount of salt and pepper, then taste the salad. If it needs more, add a little at a time until the flavors are just right. You want to add salt and pepper to enhance all the other ingredients.
Chill: For the best flavor, let the chicken salad chill in the refrigerator for at least 15 minutes. This chilling time helps the flavors blend and develop fully. If you are really short on time, you can eat it right away. The salad will stay fresh. Store any leftover chicken salad in an airtight container in the refrigerator for up to 3-4 days. This salad in an airtight container keeps well for several days