Place the sliced chicken in a large mixing bowl, followed by the cornstarch, pepper, salt, and pressed garlic cloves. Stir until the chicken is evenly coated.
Preheat the oil in a large skillet over medium heat. Whisk the eggs in a bowl. Dip each chicken piece into the eggs.
Fry the chicken on each side until golden brown. Place the fried chicken in a baking dish in a single layer.
In a small bowl, whisk the sugar, soy sauce, ketchup, apple cider vinegar, and garlic salt together.
Pour the sauce over the chicken and bake it at 350°F for 30 minutes.
As the chicken bakes, turn it over every 10 minutes to create a nice coating. Enjoy over steamed white rice or alongside your favorite noodle dish!