Pre-heat oven to 450 degrees. Line a baking sheet with foil and spray with non-stick cooking spray. Set aside.
Wash potatoes and cut into 1/2 inch thick slices (discarding the ends of the potato).
Lay the potato slices single-file on baking pan and spray lightly with cooking spray. Sprinkle potatoes evenly with the seasonings. Bake potatoes for 20 minutes, then take them out and turn each potato over. Spray potatoes again with cooking spray and return to the oven for an additional 10-15 minutes (You will know they are just about done with they turn lightly golden brown on top). At this point, take the baking pan out of the oven, but leave the oven on.
Sprinkle potatoes evenly with cheese and crumbled bacon and continue baking for 3-5 minutes, or until cheese is melted. Sprinkle green onions over the top for garnish if desired.
Serve with Greek yogurt or sour cream as a dipping sauce!