Lay the crackers face up on a large rack over a baking sheet (or broiler pan). Scoop about 1 teaspoon of the grated Parmesan onto each cracker. Cut the package of bacon in half (or cut pieces individually) and carefully, so the cheese doesn't fall off, wrap each cheese covered cracker with one half piece of bacon, completely covering the cracker. It should fit snugly around the cracker, but not be pulled too taut. Place the bacon-wrapped crackers onto the rack. Place the baking sheet in the oven for about 2 hours. Serve immediately or at room temperature!