Follow these simple steps to create your own Creamy Chicken Pasta Salad:

1. Cook the Pasta: Begin by cooking your pasta according to the package instructions. Drain and rinse under cold water to cool.
2. Prepare the Chicken: If using raw chicken, cook it in a pan over medium heat until no longer pink. Let it cool, then dice into bite-sized pieces. If using rotisserie chicken, simply shred or dice as desired.
3. Chop the Vegetables: While the pasta and chicken are cooling, chop the cherry tomatoes, cucumber, red bell pepper, and red onion into small pieces.
4. Combine Ingredients: In a large mixing bowl, add the cooked pasta, chicken, cherry tomatoes, cucumber, red bell pepper, red onion, and peas.
5. Make the Dressing: In a separate bowl, mix together the mayonnaise, sour cream, lemon juice, garlic powder, dried dill, salt, and pepper until well combined.
6. Combine Salad and Dressing: Pour the dressing over the pasta mixture and toss gently to coat all the ingredients evenly.
7. Chill: Cover the salad with plastic wrap or a lid and refrigerate for at least 30 minutes to allow the flavors to meld.
8. Serve: Once chilled, give the salad a gentle stir and adjust seasoning if necessary before serving.

By following these simple steps, you will have a delicious and creamy Chicken Pasta Salad that everyone will love.