Makes 4 servings Hands-on time: 15 minutes Total preparation time: 30 minutes 4 skin-on baby cod or small haddock fillets, about 8 ounces each About 3 tablespoons vegetable oil Kosher or sea salt and freshly ground black pepper 2 ripe medium tomatoes, thinly sliced 1 cup Buttery Crumbs (recipe follows) Adjust an oven…