Drizzle some vegetable oil to coat the bottom of the pot and brown meat for 3 min on each side. Take out a clean plate for them while they are browning
Add can of tomatoes and use a wooden spoon to deglaze the pot/scrape the stuff off the bottom
Add remaining ingredients and stir well
Add back chicken and lightly mix
Cancel saute function on Instant Pot by pressing red button. Put top on Instant Pot and press manual button, adjust pressure to high, and set timer for 20 minutes.
Trust the Instant Pot. It will take more time than you think for it to do it’s thing. Trust the Instant Pot.
Clean up while waiting
Package up any leftover ingredients while waiting
Once 20 min timer is up, use towel to cover knob and release steam (try to get away from cabinets if possible).
Once all steam is released, remove lid and wash it along with the gasket while waiting for food to cool
Take out a clean plate and remove chicken from pot, then shred back into pot
Dish out portions for this meal, then put rest into tall clear plastic cylinders for storage