01 - Set the Instant Pot to Sauté mode and heat olive oil. Add onion, carrots, and celery; cook for 3 to 4 minutes until softened.
02 - Stir in minced garlic and sauté for an additional 1 minute until fragrant.
03 - Add chicken, chicken broth, salt, black pepper, bay leaf, thyme, and rosemary. Stir to blend ingredients evenly.
04 - Seal the Instant Pot lid and cook under high pressure for 10 minutes.
05 - Allow a natural pressure release for 5 minutes, then carefully perform a quick release to remove remaining pressure.
06 - Remove chicken pieces and shred finely using two forks.
07 - Add egg noodles to the pot and return shredded chicken. Set Instant Pot to Sauté and cook for 5 to 6 minutes until noodles are tender.
08 - Stir in fresh parsley and lemon juice if desired. Adjust seasoning to taste before serving.
09 - Ladle soup into bowls and garnish with additional parsley if preferred. Serve hot.