Preheat the oven to 350°F (175°C) and lightly grease a 9x13-inch baking dish.
Place the 4 boneless skinless chicken breasts in the prepared baking dish in a single layer and set aside.
In a medium saucepan, combine 3/4 cup pineapple juice, 1/3 cup ketchup, 1/4 cup butter, 1 Tbsp cornstarch, 1 tsp soy sauce, 1 tsp Worcestershire sauce, 1/4 cup brown sugar, 1/4 tsp white vinegar, 1 tsp salt (or to taste), 1 tsp garlic powder, and 1 tsp chili powder.
Whisk the sauce mixture over medium-high heat, bring it to a boil, and continue boiling for 1 minute until slightly thickened.
Pour the hot sauce evenly over the chicken in the baking dish.
Bake uncovered in the preheated oven for 30–40 minutes, or until the chicken reaches an internal temperature of 165°F (74°C).
Remove from the oven and let rest a few minutes, then serve the chicken over cooked rice or egg noodles.