Heat the olive oil in a large pot over medium heat. Add the onion, carrots, and celery and cook for 5 minutes, until softened.
Stir in the garlic and cook for 30 seconds, until fragrant.
Pour in the chicken broth, then add the thyme and bay leaf. Bring to a boil.
Add the egg noodles and cook for 6-8 minutes, until just tender.
Stir in the shredded chicken and heat through for 2-3 minutes.
Remove the bay leaf. Stir in the parsley and lemon juice, then season with salt and pepper to taste and serve hot.