Preheat oven to 425°F and spray an 11 x 7-inch baking dish with cooking spray.
In a large mixing bowl, whisk together brown sugar, soy sauce, minced garlic, and chicken broth until smooth.
Add uncooked rice, diced red onion, chopped red bell pepper, pineapple tidbits with juice, and diced chicken to the bowl. Mix until well combined.
Pour the mixture into the prepared baking dish and cover tightly with aluminum foil.
Bake for 50 minutes, then uncover and stir gently before returning to the oven for an additional 10 minutes until the chicken is cooked through and rice is tender.
Let stand for about 5 minutes before serving; garnish with optional cilantro or bacon if desired.