Melt butter in large pot. Add onion, carrots, and celery and cook for 3-4 minutes, stirring occassionally.Stir in garlic and cook for another minute.
Add chicken stock, chicken, and bay leaves and season with salt and pepper. Bring to a boil, then reduce heat and simmer, covered. Cook for 30-40 minutes.
Stir in egg noodles and cook until tender, about 6-7 minutes.
Remove from heat. Stir in parsley, dill, and lemon juice and serve.