Put the chicken breasts, chopped onion, minced garlic, sliced carrots, and celery in your crockpot
Add the thyme, rosemary, and bay leaf. Season with salt and freshly ground pepper.
Pour in the chicken broth and cook on low for 6 hours
After 6 hours, remove herbs and chicken breasts. Shred the chicken breasts and return them to the crockpot and add the egg noodles. Cook on low for another 30 minutes or until noodles are just cooked but not too soft