Preheat oven to 425 degrees. Line a large baking sheet with foil.
Wash the potatoes and cut them into bite sized chunks. Add to a large bowl.
Meanwhile, chop the bacon into small pieces and fry until crisp. Remove bacon from the pan with a slotted spoon and drain on a paper towel lined sheet.
Pour 2 tablespoons of the bacon grease over the potatoes, add the salt and pepper, and toss to coat. Add more grease if needed to fully coat the potatoes.
Pour the potatoes onto the prepared baking sheet in a single layer. Bake for 35 minutes and remove from the oven.
Grate the clove of garlic with a mircroplane grater over the potatoes and stir. Sprinkle with the bacon and dill and return to the hot oven for 5 minutes.
Remove from the oven and top with the Parmesan cheese.