4.3 I believe. That's the answer I got.
Answer=4.25 ounces or 4 1/4 ounces
17 ounces of dough
Amount used for pizza=17*5/8=10.625ounces
Amount used for calzones=17*3/8=6.375 ounces
amount used for pizza- amount used for calzones=
10.625-6.375=4.25ounces