Place chicken and salad dressing in a resealable plastic bag. Chill chicken for 8 to 10 hours.
2
Transfer chicken and marinade to a slow cooker. Cook, covered, on MEDIUM until an instant-read thermometer inserted in center of the meat registers 180 degrees, about 4 hours.
3
Remove chicken from slow cooker. Shred chicken.
4
Add soup, cream cheese, broth, thyme, basil, and salt to liquid in slow cooker and mix well.
5
Add chicken to the slow cooker. Cook, covered, on HIGH until heated through, about 10 minutes. Serve over the pasta.