Combine ingredients for the Pico de Gallo in a small bowl then set aside. Can be done a day ahead of time.
Stir together desired amounts of Ranch dressing and salsa (I used roughly 50/50 ratios) in a small bowl to create Salsa-Ranch dressing, then set aside.
Add romaine, sweet corn, black beans, and desired amount of pico de gallo to a large bowl then toss to combine. Add avocado, crushed tortilla chips, and Salsa-Ranch dressing then toss again to combine. Serve immediately.