Place the chicken pieces into the insert of a multi-functional pressure cooker, such as an Instant Pot.
Add the chopped onion, carrots, celery, salt, garlic powder, and black pepper.
Pour the chicken broth into the pot.
Stir until all ingredients are evenly combined.
Close and lock the lid according to the manufacturer’s instructions.
Select High Pressure and set the cooking time to 10 minutes.
Allow 10 to 15 minutes for the pressure to build.
Once the cooking cycle is complete, carefully release the pressure using the quick-release method according to the manufacturer’s instructions.
Allow approximately 5 minutes for the pressure to release.
Unlock and remove the lid carefully.
Select the Sauté function.
Add the egg noodles to the soup.
Simmer for approximately 6 minutes, or until the noodles are tender.
Stir occasionally while the noodles cook.
Taste and adjust the seasoning if needed.
Serve hot.