Step 1: Cook pasta according to package directions until al dente, then drain and rinse under cold water to cool.
Step 2: In a large bowl, combine cherry tomatoes, cucumber, bell peppers, red onion, black olives, and cheddar cheese.
Step 3: In a separate bowl, whisk together mayonnaise, sour cream, lemon juice, Dijon mustard, garlic, parsley, dill, salt, and pepper until smooth.
Step 4: Add cooled pasta to the vegetable mixture, then pour the dressing over and toss gently to coat everything evenly.
Step 5: Cover and refrigerate for at least 1 hour before serving to allow flavors to meld.