Preheat oven to 350°F (175°C).
Arrange chicken breasts in a 9x13 inch baking dish.
In a medium bowl, whisk together pineapple juice, brown sugar, and soy sauce.
Pour sauce over chicken.
Top with pineapple tidbits.
Bake uncovered for 50-60 minutes or until chicken is cooked through and sauce is thickened.
Spoon sauce over chicken when serving.