In a large skillet, cook the sausage, onion and green pepper until the vegetables are tender., Add the tomatoes, broth, brown sugar, garlic powder and pepper. Drain pineapple, reserving juice. Stir pineapple into sausage mixture. Bring to a boil; cook, uncovered, for 5 minutes., Combine cornstarch and reserved pineapple juice until smooth; gradually add to sausage mixture. Bring to a boil; cook and stir for 2 minutes or until thickened. Serve with rice.