Asparagus & Smoked Mozzarella Pizzettes

Position racks in upper and lower thirds of oven; preheat to 500 degrees F. Line a large baking sheet with parchment paper.

Divide dough into 6 portions; stretch each piece into a 7-by-3-inch oval. Arrange on the prepared baking sheet. Toss asparagus with oil on a second baking sheet; sprinkle with 1/4 teaspoon salt. Bake the dough on the top rack and the asparagus on the bottom rack for 3 minutes.

Press the dough with the back of a spatula, if necessary, to flatten slightly. Sprinkle cheese over the top. Scatter the asparagus and scallions over the cheese.

Bake the pizzettes on the top rack until the cheese is melted and the crust edges are golden, 8 to 10 minutes. Sprinkle with the remaining 1/8 teaspoon salt, walnuts, mint and orange zest.