Turn your Instant Pot ON and set it to the sauté mode.
Add in your oil and heat until hot.
Season your chicken breasts with sea salt and pepper to taste, then cook in the pot until seared on both sides, about 4-5 minutes until nicely browned but not cooked through.
Stir all of your remaining ingredients into your pot.
Secure the lid and lock, setting the valve to the sealing position.
Cook on ‘soup mode’ for 20 minutes.
Once the pot beeps, set the valve to the venting position for a quick pressure release.
Unlock the lid and carefully remove the chicken onto a plate.
Shred the chicken with the help of two forks on a cutting board.
Add about 1/3 of the soup into a blender and process until smooth.
Return the pureed soup and shredded chicken back into the pot and stir to combine.
Garnish as desired and enjoy while hot!