Add the chicken breasts to the bottom of your slow cooker. Pour over the Olive Garden Italian dressing, butter, broth, parsley and sprinkle over the parmesan cheese and pepper. Place the cream cheese on top. Place the lid on the slow cooker and cook on high for 4 hours or low for 5-6 hours. When the chicken is tender boil your pasta according to box directions and drain. Shred the chicken with 2 forks mixing everything together. Toss the pasta in with the chicken and sauce and sprinkle with a little extra parmesan cheese if desired. Serve & ENJOY!