In a small bowl, whisk together all the sauce ingredients and set aside.
Place the cut chicken and corn starch into a large zip top bag and shake to coat, set aside.
In a large frying pan, heat the 1 tbsp vegetable oil over medium high heat. Add the coated chicken and fry until golden brown on all sides. (the goal here is to just brown the outside of the chicken, not to cook all the way through) Remove the chicken from the heat and set aside.
To the slow cooker, add the cut bell peppers, browned chicken, pineapple juice and pineapple chunks. Pour the sauce over the chicken mixture and stir.
Cook on HIGH for 2 hours or on LOW for 3-4 hours.
Serve with rice and garnish with toasted sesame seeds and sliced green onions. Enjoy!
Notes
Store in the refrigerator for up to 3 days in an airtight container, reheat in the microwave.
The chili garlic paste adds a bit of heat to the sweet and sour chicken and can be left out if desired a 15 ounce can of pineapple chunks with juice can be used.