Preheat oven to 375 F.
Thoroughly wash the sweet potato under a running faucet, being sure to remove any debris or growths from the skin. Pat dry with a paper towel. Using a fork, poke a few holes into the skin. Place the sweet potato onto a baking sheet and bake for 1 hour.
While the sweet potato is baking, cook bacon in a frying pan. Drain fat and allow bacon to cool. Cut the bacon into bite-size pieces and set aside.
After one hour, remove the potato from the oven. Slice potato in half length-wise. Use a spoon to scoop out the pulp into a bowl. Add to bowl your choice of fat/oil, cinnamon, nutmeg, salt, and pepper. Mix to combine.
Scoop pulp back into the skin of the sweet potato. Place back into oven to cook from 10 more minutes.
Remove from oven, and top with bacon and chopped scallions.