A regular pizza of that size have about 2000 kcal of energy and an average male would need 2500 kcal a day (less for women), so unless you only have a single me

A regular pizza of that size have about 2000 kcal of energy and an average male would need 2500 kcal a day (less for women), so unless you only have a single meal a day, which is unlikely, then it must be enough.