In a bowl, add the, pepper, sugar, vinegar, water, and soy sauce. Stir until sugar is mostly dissolved.
Poor into the Instant Pot.
Add the garlic and ginger.
Dump in the chicken, bell peppers and peanut butter.
Set to high pressure for 10 minutes, natural release for 10 minutes then quick release.
Open the lid and stir in the cornstarch and water mixture to thicken. Remove the rice bowl and trivet first if you cooked your rice at the same time.