Toss all ingredients (except the fish) together and add salt and pepper to taste.
Bake on a sheet pan at 400° for 15 minutes, stirring every 5 minutes.
Pour the browned vegetables over the seared fish and cover with foil or a lid.
Bake for 20 minutes or until the fish is cooked.
This dish may be made ahead up to the point of the final baking and then refrigerated.
Increase the final cooking time to 40 minutes.