Cut chicken breasts into chunks. Season with salt and pepper. Dip chicken in cornstarch and then in egg (yes, messy, but worth it!). Fry in a little oil until browned on all sides but not cooked through. Place in a single layer in a baking dish.

Mix sauce ingredients together and pour over chicken.

Bake for one hour at 325 degrees F. Turn chicken every 15 minutes. If you like extra sauce, make another batch of sauce and bring it to a boil on the stovetop. Stir constantly and let cook over medium heat until thickened and reduced, about 6 to 8 minutes.