Preheat your oven to 400°F.
Wash the potato thoroughly and pat it dry. Prick it with a fork, rub with 1 tsp olive oil and sprinkle a pinch of salt over it.
Bake the potato directly on the oven rack for about 45 minutes until the skin is crisp and the interior is tender.
While the potato is baking, heat a non-stick skillet over medium heat and add the lean ground turkey. Season with salt, pepper, chili powder, and cumin.
Cook the turkey until fully browned. Stir in the black beans and diced tomatoes, then let the mixture simmer for 5-7 minutes to meld the flavors.
Once baked, remove the potato from the oven and let it cool slightly. Carefully cut it in half lengthwise and scoop out most of the soft interior, leaving about 1/4 inch of potato on the skin.
Fill each potato skin with the warm turkey chili mixture, then sprinkle the sharp cheddar cheese on top.
Return the filled potato skins to the oven and bake for an additional 5-7 minutes, or until the cheese has melted and slightly browned.
Remove from the oven and serve immediately.