Place chicken, soup and wine in a 5- or 6-qt. slow cooker. Cook, covered, on high until a thermometer inserted into chicken reads at least 165°, about 3 hours. Cut chicken into bite-sized pieces; return to slow cooker., Add mushrooms. Cook, covered, on high until mushrooms are tender, 1-1/2-2 hours longer. Stir in sour cream and salt. Serve with egg noodles; sprinkle with pepper and, if desired, parsley.