Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
     1/2  cup           reduced-sodium soy sauce
     1/2  cup           unsweetened pineapple juice
     1/4  cup           vegetable oil
   1      tablespoon    brown sugar
   1      teaspoon      garlic powder
   2      teaspoons     ground ginger
   1      teaspoon      dry mustard
     1/4  teaspoon      freshly ground pepper
   1 1/2  pounds        skinless boneless chicken breast -- cut in 1" cubes
  15 1/4  ounces        unsweetened pineapple chunks -- drained
   1      large         green bell pepper -- cut in 1" pieces
  12      medium        fresh mushrooms
  18                    cherry tomatoes
   3      cups          hot cooked rice

Preparation:

Combine first 8 ingredients in a saucepan; bring to a boil. Reduce heat, and simmer 5 minutes; let cool. Pour mixture into a shallow dish; add chicken, tossing gently to coat. Cover and marinate at least 1 hour in the refrigerator, stirring mixture occasionally. Remove chicken from marinade, reserving marinade. Alternate chicken, pineapple, green pepper, mushrooms and tomatoes on 12 (7-inch) skewers. Grill over hot coals 20 minutes or until done, turning and basting frequently with marinade. Serve over hot cooked rice.