Begin by making your bacon and preparing your shell macaroni per their package instructions. Be sure to drain the macaroni noodles. Set both to the side when done.

Oil a 9x13 pan and preheat the oven to 425F.

Melt butter in a skillet over medium heat. Add the flour slowly and use a whisk to stir in order to avoid lumps. Slowly add milk while still whisking constantly until well combined.

Add  cheese, pumpkin, salt, and pepper to the mixture and stir well.

Add the shell macaroni to the pan and fully fold in to coat all noodles. Add in four slices of thinly chopped bacon as well.

Add the macaroni mixture to the 9x13 pan and spread evenly. Pack it down slightly.

Add the panko, garlic powder, parsley, and butter together and spread over the top of the pumpkin macaroni. Finish with a light sprinkle of shredded cheddar cheese and chopped bacon.

Bake for 10-15 minutes at 425F.

Allow to cool slightly before serving.