Sweet and Popcorn Chicken

I found this in Taste of Homes Simply Delicious and it is yummy!

• Ready In: 25 mins
• Serves: 4

Ingredients

• 1  medium green pepper, cut into 1 inch pieces
• 1  small onion, thinly sliced
• 1  tablespoon  vegetable oil
• 1 (20 ounce) can unsweetened pineapple chunks
• 3  tablespoons white vinegar
• 2  tablespoons soy sauce
• 2  tablespoons ketchup
• 1⁄3 cup  packed brown sugar
• 2  tablespoons cornstarch
• 1 (12 ounce) package  frozen  popcorn chicken

Directions

1. In a large skillet or wok, stir fry green pepper and onion in oil for 3-4 minutes or until crisp-tender. Drain pineapple, reserving the juice in a 2 cup measuring cup; set pineapple aside. Add enough water to the juice to measure 1 1/3 cups; stir in the vinegar, soy sauce and ketchup.
2. In a bowl, combine brown sugar and cornstarch. Stir in pineapple juice mixture until smooth. Gradually add to the skillet. Bring to a boil; cook and stir for 2 minutes or until thickened. Add pineapple. Reduce hat; simmer, uncovered, for 4-5 minutes or until heated through.
3. Meanwhile, microwave chicken according to package directions. Stir into pineapple mixture. Serve immediately.