First of all, preheat your oven to 425 degrees.
Then, toss all of the dry ingredients into a gallon-size Ziploc bag and shake to combine. The measurements there for the seasonings are guidelines--feel free to alter them as you wish, or measure them in your palm and skip the measuring spoons altogether. So long as you start with approximate amounts of the bread crumbs, flour, and Parmesan, you can't really go too far wrong.
Then, cut your potatoes into wedges--I generally get about 8 wedges from each potato, but the important thing is not the number, but that they're more or less evenly sized, so they all cook at the same rate.
Dunk your wedges in the melted butter, then shake them, a few at a time, in the Parmesan mixture, and arrange on a greased or parchment-lined cookie sheet. Stand them up with the skin side on the bottom if you can, but if they want to lay on their sides instead, that's fine--just flip them halfway through the cooking time.
If you have any leftover butter, drizzle it over top of the potatoes before you pop them into the preheated oven. Or don't, if all that butter scares you.
Bake for about 35 minutes or until they're tender and browned,.