Turn the Instant Pot to saute mode. Add olive oil, white onion, garlic, and jalapenos. Saute for about two minutes.
Add the rest of the chili ingredients to the pan and mix.
Set the Instant Pot to Pressure cook for 10 minutes. You can add up to 4 extra minutes depending on the size of the chicken breast.
When the Instant Pot is done, manually release the pressure. Remove the chicken and shred it.
Use an immersion blender (or regular blender) to blend the potatoes into the broth. Only do this for a couple of pulses, there should still want some chunks in the chili.
Add the chicken back to the chili. Serve with avocado and cilantro. Enjoy!