01 - Boil pasta according to package directions until al dente. Drain thoroughly, rinse under cold water to stop cooking process, and set aside to cool completely.
02 - If using meat, brown ground beef or turkey in a skillet over medium heat, breaking apart with a spatula until fully cooked. Drain excess fat and allow to cool.
03 - In a large mixing bowl, combine cooled pasta, cooked meat (if using), cherry tomatoes, black beans, corn, red onion, bell pepper, lettuce, shredded cheese, and black olives.
04 - Whisk together sour cream, mayonnaise, taco seasoning, lime juice, salt, and pepper in a small bowl until smooth and well combined.
05 - Pour dressing over salad mixture and toss thoroughly until all ingredients are evenly coated with the creamy dressing.
06 - Just before serving, fold in crushed tortilla chips and fresh cilantro to maintain crunch and freshness.