I totally agree with u. I totally undestand that he's frustrated. During all last year he did excellent numbers, proved to be the best tall man of the team, and right now he's just playing.. 14min!!
The problem is that in Atlanta right now Hotford is playing as a center (he's much more a pf) and Josh Smith and even sometimes Williams (both are sf's) normally play as a pf.
Half of the NBA is looking for quality tall players and Zaza is just warming the bench there... I hope there's a medical explanation or something like that for this. Otherwise, his coach should wake up or he should look for a transfer.