Set a 12-inch skillet over medium-high heat and add ground chicken, diced bell peppers, and diced yellow onion.
Cook until the meat is fully cooked and the vegetables have just started to soften.
Add in the pineapple and stir to combine.
In a small bowl whisk together pineapple juice, rice vinegar, dark brown sugar, ketchup, and soy sauce.
Add the sauce to the skillet and cook for a few minutes to combine the flavors.
In a small bowl whisk together cornstarch and cold water.
Add cornstarch mixture to the skillet and cook for a few minutes just until the sauce starts to thicken.
Remove from the heat and serve over white rice.
