2 oz is not necessarily one cup. it depends on the shape of the pasta.
All pastas, grains, rice, and items of that nature should be weighed (not volume measured, i.e., 'cup') BEFORE they're cooked because depending on the shape and makeup, they each absorb different amounts of water.
Look at the difference (dry) between 2 oz of ziti compared w/ two ounces of ditalini; or elbows, or rice -- and compare brown rice 2 oz to white rice; compare arborio and long grain.
Measure by weight before you cook; not by volume, after you cook.
Will eating it change your life NOW? Or will not eating it NOW change your life more?