Preheat oven to 400 F, and option to line 2 rimmed baking sheets with parchment paper for easy clean up.

In a small bowl, combine the parmesan, Italian seasoning, garlic powder, kosher salt, and pepper.

Cut the squash in half, I find it easiest to put the tip of a knife in one of the groves, starting from the center. The stem is thick and hard to cut through, I usually try to slice above/below it. Use a spoon to remove the acorn squash seeds. Now slice the squash into 1/2" moon slices.

Place squash slices on your prepared baking sheets. Use a pastry brush to brush oil on the top of each slice. Sprinkle with parmesan combo.

Bake in preheated oven for 22-25 minutes, until the tops are crisp and golden.