For different options for each PieChart you can either go the Table-route or the MapThread-route:

data = {{3, 5, 1}, {2, 18, 10}, {1, 4, 9}};
plotlabels = {"plot a", "plot b", "plot c"};
MapThread[PieChart[#1, PlotLabel -> #2] &, {data, plotlabels}]

You can add as many variables you like (say different colors, or annotations or ....) and use #3, #4 et cetera...

What do you want to do with the charts?

With data as

data = RandomInteger[{0, 25}, {5, 3}];

one approach might be

plot = PieChart[data[[#]], PlotLabel -> #, 
    ChartLegends -> {"a", "b", "c"}, 
    ChartLabels -> {"a", "b", "c"}] & /@ Range[Length@data]

which we can export using

Export[StringJoin["Chart_", IntegerString[#], ".pdf"], plot[[#]]] & /@ 
 Range[Length@data]