01 - If using raw chicken breasts, season with salt and pepper. Grill or sear over medium heat until fully cooked through, approximately 6-7 minutes per side. Allow to cool, then dice or shred into bite-sized pieces.
02 - Place pecan halves in a dry skillet over medium heat. Toast for 3 to 4 minutes, stirring frequently to prevent burning, until fragrant. Remove from heat and set aside to cool.
03 - In a large salad bowl, add the mixed salad greens, halved cherry tomatoes, sliced red onion, diced celery, and diced apple.
04 - Add the prepared chicken, toasted pecans, and crumbled cheese to the bowl with the vegetables.
05 - In a small mixing bowl, whisk together the mayonnaise, Greek yogurt, Dijon mustard, honey, apple cider vinegar, and olive oil. Season with salt and black pepper, whisking until the mixture is smooth and creamy.
06 - Drizzle the dressing evenly over the salad ingredients. Toss gently to ensure all components are well coated without crushing the greens.
07 - Portion the salad onto plates immediately. Garnish with additional pecans or cheese crumbles if desired.