Cook the shell pasta according to the directions on the package. When done, drain and rinse with cool water. Dump into a large mixing bowl and set aside to cool.
Mix together the sour cream, mayonnaise, ranch seasoning, parsley, and dill Stir until well combined and pour over the pasta. Stir together until all of the pasta is coated.
Add cubed cheese, thawed peas, and crumbled bacon. Toss to combine and season with salt and pepper as needed to taste.
Cover and chill for at least one hour before serving.