Heat an outdoor grill. (Can use a grill pan on the stove top also)
In a small non-stick pan, sauté the garlic and olive oil together.
Brush the garlic olive oil mixture over the squash slices with a pastry brush. Sprinkle with salt and pepper.
Grill each side on the squash until grill marks appear and looking crispy. Top rack will take longer, maybe 5 minutes per side and putting on direct heat will take very little time, but 2 minutes per side depending on the thickness of the squash.
Notes
*Reduce olive oil to cut fat if macros getting high in fat.