Put the sliced squash in a bowl and add EVOO.
Sprinkle the parmesan in the bowl and mix covering each squash.
An alternative method for mixing these and keeping your hands clean would be to dump it all in a ziploc bag, just be sure to zip the bag closed before mixing!!
After the squash has oil and parmesan on it put the slices in a single layer, not overlapping , on a cookie tray in a 400 degree oven for 20 minutes. You do not have to flip these to make them toasty on the other side.