In a large mixing bowl, combine the shredded chicken, black beans, corn kernels, diced red bell pepper, and sliced green onions.
Add the freshly chopped cilantro and toss gently to distribute evenly throughout the salad.
Drizzle the zesty ranch dressing over the mixture and stir carefully to coat all ingredients.
If using optional spices or add-ins like avocado, cheese, or jalapeño, fold them in gently at this point.
Just before serving, sprinkle the crushed tortilla chips on top to maintain their crunch.
Serve immediately or chill for 15 minutes to allow flavors to meld.