Preheat your oven to 400°F. Scrub the potato, pierce it several times with a fork, and bake for 45-50 minutes until the center is tender.
While the potato is baking, heat a non-stick skillet over medium heat. Add the ground turkey, diced red onion, and minced garlic, cooking until the turkey is fully browned.
Stir in the black beans, tomato puree, chili powder, cumin, sea salt, and black pepper. Simmer the mixture for 5-7 minutes until thickened, then set aside.
Once the potato is cool enough to handle, slice it in half lengthwise. Scoop out the flesh, leaving about a quarter-inch shell to maintain structure.
Brush the inside and outside of the potato skins with olive oil and place them cut-side up on a baking sheet. Bake for 5-8 minutes until the edges are golden and crispy.
Spoon the turkey chili mixture evenly into the potato skins and top with the shredded sharp cheddar cheese.
Return the skins to the oven for 3-5 minutes, or until the cheese is completely melted and bubbly.
Garnish with a dollop of non-fat Greek yogurt and a sprinkle of fresh chives before serving hot.