Preheat oven to 375 degrees
CHICKEN:
Spray a large skillet with non-stick spray and heat.
Coat both sides of the chicekn with flour, shaking off excess four
Add chicken to the hot skillet and brown both sides.
Transfer to an oven-safe casserole dish and set aside.
SAUCE:
Drain the pineapple, keeping the juice. Transfer the juice to a 2 cup measure cup and add enough water to make 1 1/4 cups. Set aside.
In a small bowl, combine the sugar, vinegar, cornstarch, soy sauce, ginger and bouillon. Whisk well to blend, adding hte pineapple juice as you whisk. Bring to a boil in a small sauce pot, slightly reduce the heat and gently boil for aobut 4 minutes, stirring often until sauce has thickened.
Pour half of the sauce mixture over the chicken. Arange the pineapple slices and pepper rings on top then add the remaining sauce.
Bake for 30 - 40 minutes or until the internal tempreture reaches 156 degrees. In desired, serve over rice.