**Cook the Pasta:** Bring a large pot of salted water to a boil. Cook the pasta according to package instructions until al dente. Drain and rinse under cold water to cool.
**Prepare the Dressing:** In a mixing bowl, whisk together mayonnaise, sour cream, Dijon mustard, apple cider vinegar, honey, garlic powder, salt, and pepper until smooth and creamy.
**Combine Ingredients:** In a large serving bowl, combine the cooked pasta, cherry tomatoes, cucumber, red onion, carrots, bell peppers, and parsley.
**Toss with Dressing:** Pour the dressing over the pasta and vegetables. Toss until everything is evenly coated.
**Chill and Serve:** Cover and refrigerate for at least 1 hour before serving to allow the flavors to meld together.