Season chicken lightly with salt and white pepper. Place chicken pieces on the trivet in your instant pot as best as possible to avoid burning or sticking to the bottom of the pot.
Add the entire can of pineapple chunks with juice over the chicken. In a medium bowl whisk hoisin sauce, soy sauce, brown sugar, vinegar, ginger, garlic, and add to the instant pot.
Close the lid, and turn the valve to sealing. Pressure cook on high for six minutes with quick release.
When the cooking cycle is complete, quickly release the pressure. When the pressure is released, remove the chicken and pineapple from instant pot. In a small bowl, mix the cornstarch with the same amount of liquid from the pot, to create a slurry, and add it back to the pot to thicken the sauce.
Add the chicken and the pineapple chunks back to the Instant Pot and stir to coat. Serve warm over rice and top with cilantro.
Notes
Add salt at the end if needed - soy sauce provides plenty of saltiness.
Substitute 1 tsp ground ginger if you don’t have fresh ginger.
For a spicy kick, stir in chili flakes or a little sriracha.
Store leftovers in an airtight container in the fridge for up to 3 days; reheat once on the stovetop.
You can use frozen chicken as well. Just increase the cooking time to 10 minutes.