In a large bowl, combine the shredded chicken, chopped romaine lettuce, halved cherry tomatoes, rinsed black beans, and corn. Toss gently to mix well.

In a blender, combine avocado, Greek yogurt, lime juice, cumin, salt, and pepper. Blend until smooth, adding water or lime juice as needed for consistency.

Pour the creamy dressing over the salad mixture and toss gently with tongs until well coated.

Add optional toppings like shredded cheese or cilantro for extra flavor and serve immediately.