01 - Cook 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 until fully cooked, breaking apart with a spoon. Drain excess fat and allow to cool before combining with other ingredients.
03 - In a large mixing bowl, combine cooked pasta, cooked meat (if using), cherry tomatoes, black beans, corn, red onion, bell pepper, lettuce, cheese, and black olives.
04 - In a separate small bowl, whisk together sour cream, mayonnaise, taco seasoning, lime juice, salt, and pepper until completely smooth and well incorporated.
05 - Pour the creamy dressing over the salad mixture. Toss gently but thoroughly until all ingredients are evenly coated with the dressing.
06 - Immediately before serving, fold in crushed tortilla chips and fresh cilantro to maintain optimal texture.
07 - Serve chilled or at room temperature. Best enjoyed the same day it is prepared for optimal texture and flavor.