Slice carrots and celery, set aside. Chop fresh parsley.
Set the Deluxe Multi-Cooker to SEAR on Med and heat the oil for 3 minutes. Meanwhile, dice onions. Add the onions stirring frequently until softened, about 3-4 minutes.
Add in the rest of the ingredients EXCEPT the egg noodles and the lemon. Lock the lid and select CUSTOM (high pressure) for 10 minutes, Press Start.
When the timer is up, press CANCEL. Press STEAM-RELEASE to manually release the pressure.
Remove bay leaf and discard. Remove chicken to board, and shred.
Set the Deluxe Multi-Cooker to SEAR on HIGH to bring soup to a boil. Once boiling, add in egg noodles,and cook until tender, about 6 minutes (up to 8 minutes if you like them very tender).
Add chicken back in, along with the juice of half of a lemon. Stir to combine.