Wash and pat dry chicken. Pour dressing over chicken in the crock pot. Cook 4 hours on high. Remove chicken from pot and shred up meat. Dump out crock pot dressing. Add remaining Italian dressing, cream cheese and chicken broth. whisk well. Add shredded chicken back to crock pot and mix well. Cook another hour. 20 minutes before chicken is done cook pasta according to box. Drain. Serve chicken mixture over pasta!