Place salsa verde into your Instant Pot inner pot. Add in the chicken breasts, sprinkle with a pinch of sea salt and freshly ground pepper (no trivet necessary!) and put your lid on.
Turn valve to sealing, and select Manual (or Pressure Cook), high pressure for 10 minutes (they will be cooked at 7-8 minutes, but a couple extra minutes makes them fall apart tender).
It will take about 10 minutes to come to pressure and start counting down.
Once cook time is over, turn the Instant Pot off and let the pressure release naturally for 10 minutes (don't touch it!).
Open the lid then, shred the chicken breasts with the remaining liquid in the pot, sprinkle with fresh chopped cilantro, then serve as desired.