BBQ Pineapple Chicken

4 boneless, skinless chicken breasts
1 pkg. barbeque Shake'n Bake
1 green pepper
1 med. onion
1 can pineapple tidbits

Coat chicken with shake 'n bake and place in pammed casserole. Cut green pepper and onion into small chunks; put on top of chicken. Pour pineapple and juice over top. Bake, uncovered, for 45 mins @ 350°.