Preheat oven to 375 degrees F. Lightly grease a cookie sheet with non-stick cooking spray.
In a medium bowl, mix cheeses, spinach, basil and parsley.
Divide dough into 4 equal parts and roll out on a floured board to about 6 inches in diameter.
Spoon equal amounts of filling onto each piece of pizza dough.
Fold over and seal edges, pinching closed with fingers or tines of a fork.
Place calzones on prepared cookie sheet.
Beat egg and brush tops of calzones. Sprinkle with sesame seeds.
Bake, uncovered, at 375 degrees for 30 minutes or until dough is golden.