Heat olive oil in a large pot over medium heat.
Add onion, carrots, and celery and sauté until vegetables soften, approximately 5 to 7 minutes.
Stir in minced garlic and cook for 1 minute until fragrant.
Pour in chicken broth and add thyme, salt, and pepper.
Bring the mixture to a boil, then reduce heat and simmer for 10 minutes.
Add egg noodles and cook until tender, approximately 6 to 8 minutes.
Stir in the shredded chicken and cook for 2 minutes until heated through.
Remove from heat, stir in fresh parsley, and serve immediately.