Arrange the chicken, celery, carrots, onion and garlic in the bottom of a slow cooker or crock pot. Cover with the chicken stock and Worcestershire sauce.
Stir in the Italian seasoning, garlic powder, onion powder, thyme and parsley.
Cover and cook on high for 2-3 hours or low for 4-6 hours or until the chicken is cooked through and shreds easily with a fork.
Remove the chicken and shred with 2 forks.
Return the chicken to the pot and stir in the egg noodles.
Cover and cook on low for 20-30 minutes or until the noodles are tender.
Season with salt and pepper, to taste.
Notes
For best results, add the noodles 20 minutes before serving or they will disintegrate into the soup.