Cut chicken into bite-sized pieces. Slice mushrooms, dice onion, and mince garlic.
Add chicken to crockpot. Top with mushrooms, onion, and garlic. Pour in soup, broth, and Worcestershire sauce. Add all seasonings and stir.
Cover and cook on LOW for 4-6 hours or HIGH for 2-3 hours until chicken is tender.
In the last 10 minutes, stir in sour cream and cream cheese until smooth.
Cook egg noodles according to package directions and drain.
Serve stroganoff over noodles, garnish with parsley and black pepper.