Preheat the oven to 375°F. Line a baking sheet with parchment paper. Fold the parchment paper in half, then open it back up and place the fish on one half, close to the crease.
Combine the remaining ingredients and place on top of and around the fish.
Fold the other half of the parchment over the top of the fish and vegetables. Working around the edges, fold the parchment over tightly in 1/4-inch folds, then fold up the ends to make a closed packet. Bake for 12 to 15 minutes. Remove from the oven.
Place on a plate and carefully remove the fish from the paper and serve.