You can change up the flavor any way you like just by switching up the seasonings; add a little cayenne or chili powder if you want an extra kick, substitute garlic salt for seasoned salt if you don’t have any minced garlic, and more.
Wash potatoes, cut out any bad spots, and slice thinly.
Tear off 4-5 sheets of aluminum foil, and drizzle a little olive oil in the center of each.
Divide potatoes evenly among the foil sheets, placing a pile in the center of each.
Drizzle with a little more olive oil, then top with garlic, spices, and Parmesan to taste. (You'll want to go on the heavier side with your seasonings here.)
Fold foil over to seal up your packets, then grill over medium heat for 20 minutes.
Open up your packets right before you're ready to serve the potatoes so that they stay warm until the rest of your meal finishes cooking.