01 - Cook pasta according to package directions. Drain, rinse under cold water, and set aside.
02 - In a skillet over medium heat, brown ground beef or turkey until fully cooked, breaking it apart as it cooks. Drain excess fat and let cool.
03 - In a large bowl, combine cooked pasta, cooked meat (if using), cherry tomatoes, black beans, corn, red onion, bell pepper, lettuce, cheese, and olives.
04 - In a separate small bowl, whisk together sour cream, mayonnaise, taco seasoning, lime juice, salt, and pepper until smooth.
05 - Pour the dressing over the salad ingredients. Toss until everything is evenly coated.
06 - Immediately before serving, fold in crushed tortilla chips and cilantro.
07 - Serve chilled or at room temperature.