Can i put a pot pie on a round oven tray?

can i put a pot pie on a round oven try instead of a cookie sheet ?? this round oven tray has holes in it, but they are small tiny holes. i don't have a regular cookie tray. i'm 21, my moms asleep so i'm just trying this on my own. please help, do you think i will start a fire ? i don't wnat to.