01 - If starting with raw chicken, poach or roast until fully cooked. Allow to cool completely, then shred or dice into bite-sized pieces.
02 - In a large mixing bowl, combine the cooked chicken, celery, red onion, mayonnaise, Dijon mustard, lemon juice, chopped dill, salt, and black pepper. Mix thoroughly until all ingredients are evenly distributed.
03 - Taste the chicken salad and adjust seasoning as needed. Add more salt, pepper, or lemon juice to achieve desired flavor balance.
04 - Divide the mixed salad greens evenly among four serving plates or shallow bowls, creating a bed for the chicken salad.
05 - Mound a generous scoop of chicken salad atop each bed of greens. Arrange halved cherry tomatoes and cucumber slices around the perimeter.
06 - Sprinkle sliced almonds or pecans over the salads for crunch. Garnish with fresh lemon wedges and an extra pinch of dill if desired. Serve immediately while greens are crisp.