Prepare the Chicken: Remove the skin from the rotisserie chicken if desired, and shred the meat into bite-sized pieces. Use both white and dark meat for a balance of flavor and texture.
Prepare the Vegetables: Wash and dry the mixed greens or spinach. Halve the cherry tomatoes, slice the cucumber, and thinly slice the red onion. Shred the carrots if using, and slice the avocado just before assembling the salad to keep it fresh.
Make the Dressing: In a small bowl, whisk together olive oil, lemon juice, Dijon mustard, honey, and a pinch of salt and black pepper. Taste and adjust the seasoning as needed.
Assemble the Salad: In a large salad bowl or serving platter, layer the mixed greens as the base. Arrange the shredded chicken, cherry tomatoes, cucumber, red onion, shredded carrots, and avocado slices on top.
Add the Dressing: Drizzle the dressing over the salad and gently toss to combine, ensuring all the ingredients are evenly coated.
Garnish and Serve: Sprinkle the salad with croutons or toasted nuts for added texture and flavor if desired. Serve immediately, and enjoy this fresh and satisfying meal.