01 -
In a large glass measuring cup or mixing bowl, combine pineapple juice, brown sugar, ketchup, soy sauce, garlic, Worcestershire sauce, and all seasonings. Whisk until fully incorporated; set aside.
02 -
Heat butter in a large skillet over medium-high heat. Add the chopped onion and sauté until the onions begin to brown.
03 -
Stir in the flour. Add the prepared pineapple juice mixture to the skillet with butter, onion, and flour. Bring to a boil. Continue boiling and stirring for 10-15 minutes or until the sauce thickens.
04 -
Place the chicken breasts in a slow cooker and pour the thickened sauce over them. Cook on low heat for 8 hours.
05 -
Shred the chicken using two forks. Optionally, prop open the lid to allow additional liquid to evaporate for a thicker sauce. Serve on sandwich rolls, over rice, or in salads.