This was delicious! Here's the blog I got it from, Favorite Family Recipes.
1 Lb. chicken breasts (cut into 1" pieces)
2 Tbsp. vegetable oil
1/4 c. sugar
1/4 c. "lite" soy sauce
1/4 c. unsweetened pineapple juice
1/4 c. white distilled vinegar
2 cloves garlic, crushed
1 tsp. fresh ginger, finely grated
1/4 tsp. cayenne pepper
1 Tbsp. cornstarch, mixed with 3 Tbsp. water
4 green onions, sliced
hot pepper flakes (You've got to add some of these because it adds so much flavor. Don't go crazy though or you'll be burnin'.)
Dredge chicken in flour and fry in oil over medium heat (in a wok or a skillet) until golden brown and crispy. Drain excess oil. Sprinkle cayenne over the chicken and keep warm on low heat. Meanwhile, in a saucepan, combine sauce ingredients (sugar, soy sauce, pineapple juice, vinegar, garlic, and ginger) and heat gently. When sauce is smooth and sugar has dissolved, SLOWLY add cornstarch mixture and stir constantly until sauce has thickened to desired thickness. Pour sauce in the wok and stir to coat chicken. Stir in green onion and hot red pepper flakes (optional). Remove from heat and serve with fried rice.