01 -
Preheat the oven to 350°F (177°C). Lightly grease a 9 by 13-inch baking dish.
02 -
In a large bowl, toss chicken breast pieces with cornstarch until evenly coated. Dip each piece in the beaten eggs and set aside on a plate.
03 -
Warm vegetable oil in a large skillet over medium-high heat. Sear the coated chicken pieces quickly on all sides until lightly golden, but not cooked through. Transfer the browned chicken to the prepared baking dish.
04 -
In a medium bowl, whisk together granulated sugar, ketchup, apple cider vinegar, low-sodium soy sauce, garlic powder, salt, and black pepper until the mixture is smooth.
05 -
Scatter chopped green bell pepper, red bell pepper, and drained pineapple chunks evenly over the chicken in the baking dish.
06 -
Pour the prepared sauce evenly over the chicken and vegetables. Bake uncovered for 45 to 50 minutes, stirring once halfway through, until the chicken is thoroughly cooked and the sauce is thick and bubbly.
07 -
Serve hot. Accompany with cooked white rice if desired.