First, take a baking sheet and line it with foil.
Second, brush 2 tablespoons of olive oil over the foil coating it evenly.
Then slice the zucchini about 1/3 of an inch thick and spread it out to cover the baking sheet. Place the zucchini slices close together.
Next, drizzle or brush the zucchini with the remaining 2 tablespoons of olive oil.
Salt and pepper the zucchini to taste.
Then, spread the minced garlic over the zucchini so each piece has some on it.
Sprinkle the parmesan cheese over it all and then top with slices of jalapeño. The jalapeño is optional. Leave it off if you don't like spice.
Take the foil with the zucchini and toppings and place it on the grill on a medium heat for 20 minutes or until edges begin to brown and cheese melts.
OR bake in a 400 degree (F) oven for 20 minutes or until edges are brown. Keep an eye on it.