Preheat oven to 400F.
Mix cheese and spices together.
Drizzle olive oil in a 9 x 13" glass baking dish. Tilt pan to spread all over the base.
Use a spoon to scatter the cheese and spice mixture onto the bottom of the pan. Spread as evenly as you can and, this is important, do not attempt to spread it out or move once it’s sprinkled.
Place potatoes cut side down onto pan, pressing firmly into the cheese and spice mixture.
Spray tops of potatoes with olive oil cooking spray, then sprinkle tops with another pinch of salt.
Bake potatoes for 35 - 40 minutes or until they are soft and the parmesan crust is nice and golden.
Allow potatoes to cool in pan for 5 minutes before using a spatula to remove potatoes and cheesy crust!
