01 - Set the Instant Pot to Sauté mode and heat olive oil. Add diced onion, sliced carrots, and celery. Cook for 3 to 4 minutes until softened.
02 - Stir in minced garlic and cook for an additional minute until fragrant.
03 - Add chicken, low-sodium chicken broth, salt, black pepper, bay leaf, dried thyme, and dried rosemary. Stir thoroughly to incorporate all ingredients.
04 - Close and seal the Instant Pot lid. Cook on High Pressure for 10 minutes.
05 - Allow the pressure to release naturally for 5 minutes, then perform a quick release to remove any remaining pressure.
06 - Remove the chicken breasts or thighs and shred finely using two forks.
07 - Add wide egg noodles and return shredded chicken to the pot. Switch Instant Pot to Sauté mode and cook for 5 to 6 minutes until noodles are tender.
08 - Stir in chopped fresh parsley and lemon juice if using. Adjust seasoning with salt and pepper to taste.
09 - Ladle soup into bowls and garnish with additional fresh parsley as desired. Serve hot.