Pound chicken to even thickness, then season with spices and olive oil. Air fry at 375°F (190°C) for 15 minutes, flipping halfway. Rest for 5 minutes, then dice into ½-inch pieces.
Mix mayonnaise, Dijon mustard, and lemon juice to make the dressing. Toast pecans in a skillet until fragrant, then cool.
Combine diced chicken, celery, red onion, cranberries, pecans, and dill in a bowl. Add dressing and fold gently. Season with salt and pepper as needed. Chill for at least 30 minutes before serving.
Notes
For best flavor, refrigerate the salad for at least 30 minutes before serving.