Unroll dough and press evenly into an oiled 14 inch pizza pan (or 10x15 inch pan). Bake on bottom rack in a 425 degree oven until crust is well browned, about 8 minutes.
Cut enough prosciutto into 1/4 inch strips to make 1/4 cup, set remainder aside. Mix ricotta and lemon peel. Drop in 1 tablespoon portions over crust. Arrange nectarines, grapes, and prosciutto strips on crust. Combine sugar and cinnamon; sprinkle over pizza.
Bake until fruit is hot to touch, about 5 minutes longer. Accompany with remaining prosciutto. Cut into wedges.
Serves 6.
Per serving: 234 calories (22% from fat), 5.6 grams fat, 487 m sodium, 17 mg cholesterol.
OMMENTS: A ready-to-cook refrigerated pizza crust, the base for the breakfast pastry, makes morning baking a snap. In addition to the fruit pastry, offer more fresh grapes and nectarines for munching.