Unroll crescent dough and place on a greased 12 inch pizza pan; press seams together and press up sides of pan to form a crust. In a skillet, brown sausage over medium heat; drain and cool slightly. Sprinkle sausage, hash browns and cheddar cheese over crust. In a bowl, beat eggs, milk and pepper; pour over pizza. Sprinkle with parmesan cheese. Bake at 375 degrees for 28-30 minutes or until golden brown. Let stand 10 minutes before cutting.