Preheat oven to 425 degrees F.
Wash and cut the potatoes into eighths.
Get out a cookie sheet and line with parchment paper.
Spread the potatoes out across the sheet pan and drizzle with olive oil.
Sprinkle with salt and pepper toss to coat.
Put potatoes in the oven and begin baking.
While the potatoes are baking brown the ground beef and drain the fat.
Add the taco seasoning and stir in.
Take the potatoes out of the oven and check for doneness, if they aren't totally done that's ok.
Spread the taco meat over the top of the potatoes and then sprinkle with the cheese.
Put the sheet pan back in the oven and cook until the potatoes are fork tender.
Take them out and put on your favorite nacho toppings.