Preheat oven to 425°F. Sprinkle a surface with ¼ cup of sugar; unfold puff pastry sheet on surface. Roll into a 14x10-inch rectangle.
rush with egg wash. Sprinkle with brown sugar, then pistachio, then cinnamon and then the orange zest. Lightly press into pastry.
Starting at a short side, roll up jelly-roll style, stopping at the middle. Starting at the other side, roll up other side. Freeze until firm, 20-30 minutes. Cut into 3/8-in. slices.
Place on parchment-lined baking sheet. Sprinkle with 1 tablespoon sugar. Bake for 8 minutes. Turn pastries over and sprinkle with remaining 1 tablespoon sugar. Bake until golden brown and glazed, about 6 minutes longer. Remove to wire racks to cool completely.