Set the Instant Pot to the “saute” mode and add the olive oil to it. Once hot, add the carrots, onion, and celery and saute for 3-4 minutes, until soft and translucent.
Add the garlic to the pot and stir to combine. Then, press the “cancel” button to turn the Instant Pot off.
Add the chicken thighs, chicken broth, salt, pepper, and bay leaves to the pot.
Secure the lid onto the Instant Pot and cook on high pressure for 7 minutes.
Once the 7 minutes is up, either let the pressure release naturally or do it manually (by turning the pressure valve to “venting”). Remove the lid and transfer the chicken thighs to a large bowl to cool slightly.
Set the Instant Pot back to “saute” mode. Once the soup is boiling, add the noodles, and let them simmer for about 5 minutes, until soft and cooked through.
While the noodles are cooking, shred the chicken.
Once the noodles are finished, press “cancel” on the Instant Pot to turn it off, and return the chicken to the pot. Then, stir in the lemon juice.
Garnish the soup with parsley, serve, and enjoy!