Place pork roast in the Instant Pot. Pour entire jar of pepperoncini peppers and juice on top of roast.
Add in chicken broth.
Sprinkle top of roast with dry ranch dressing mix and ground black pepper.
Put your lid on the pot and put the VALVE on sealing (not venting). Press the MANUAL (or PRESSURE COOK) button and set timer for 60 minutes (or 20-25 minutes per pound of your roast).
When timer is finished, let pressure do a NATURAL RELEASE (it will take at least 20 minutes - I prefer to let it sit in my Instant Pot on the "keep warm" setting for a couple of hours and it will literally fall apart).
Shred or slice roast (it should fall apart pretty easily) and serve.
This is delicious served on top of buns as sandwiches, on top of salads, or even eaten as is with a side of mashed potatoes. It's super versatile.
Notes
To turn into a freezer meal, add all ingredients EXCEPT chicken broth to a gallon-sized freezer bag. Place freezer bag into freezer and it will last up to 60 days. When ready to use, dump ingredients from bag into Instant Pot and add 3/4 cup chicken broth in with the frozen food. Place the lid on top, move the valve to SEALING, and press the MANUAL button. Set timer for 90 minutes (or 30-35 minutes per pound of your roast). Do a NATURAL RELEASE when the timer is done – I even like to let it sit in the Instant Pot for a few hours so that it falls apart so easily. Follow the rest of the instructions as written.