In a cast iron pan, cook 2 cups of the corn kernels until browned or a little blackened. Stir often.
While the corn is cooking, set the Instant Pot to Saute and add olive oil.
Once hot, sear chicken breasts for 3 minutes per side. Sprinkle each side with some kosher salt. Then remove the chicken breasts.
Deglaze the pot with a little chicken broth, scraping any browned chicken bits left behind.
Add celery and shallots to the Instant Pot. Stir and cook for a couple minutes. Turn off the Saute function.
Then add in the baby potatoes, blackened corn kernels, the 1 cup of regular corn kernels, the seared chicken breasts and the rest of the chicken broth.
Secure lid and set to 8 minutes on high pressure. Once the timer is up, give the soup a 10 minute Natural Pressure Release. Then carefully release the remaining pressure and remove the lid.
Set Instant Pot to Keep Warm. Take out about 2 cups of soup and using a hand blender, blend the rest of the soup in the Instant Pot. Then add back in the non-blended 2 cups of soup.
Shred the chicken with 2 forks.
Lastly, add ¾ cup cream and frozen kale. Stir and heat through.
Taste and add seasoning if needed. Serve hot with chives on top.