01 - In a large mixing bowl, combine the shredded chicken, diced celery, halved grapes, chopped red onion, and roughly chopped nuts. Toss gently to distribute evenly.
02 - In a separate small bowl, whisk together the Greek yogurt, mayonnaise, Dijon mustard, lemon juice, honey, salt, and pepper until smooth and creamy.
03 - Pour the dressing over the chicken and vegetable mixture. Toss thoroughly until every component is evenly coated with the creamy dressing.
04 - Arrange the mixed salad greens on a serving platter or individual plates. Spoon the dressed chicken salad over the greens. Serve immediately, or refrigerate for 30 minutes to allow the flavors to meld.