This incredibly easy seafood dinner uses fresh pineapple and a teriyaki-style sauce a sweet-and-tangy flavor profile. The pineapple also concentrates as it bakes and helps keep the rice mixture from becoming too dry. Rather than spreading the rice to the far edges of the sheet pan, keep it closer to the center and layer the vegetables and shrimp on top. This way their juices seep right into the rice, and the teriyaki drizzle coats every bite.