Cut the ends of the squash off and slice diagonally into 1/4 inch slices. Place into a gallon ziploc bag.
Whisk the olive oil, balsamic vinegar and spices together . Pour into the ziploc bag with the squash. Toss to evenly coat. Let marinate for 5-10 minutes while you heat the grill.
Heat your grill to medium-high heat. Place the squash on the grill, and grill for 5 minutes on each side.
Remove from grill. Serve and enjoy!