Preheat your oven to 400°F and line a baking sheet with parchment paper.
Scrub the potato clean, pierce it several times with a fork, and bake for 45-50 minutes until the center is tender.
While the potato bakes, brown the ground turkey and diced onion in a non-stick skillet over medium-high heat until the turkey is cooked through.
Stir in the chili powder, cumin, sea salt, black pepper, and tomato sauce; reduce heat and simmer for 5-7 minutes.
Once the potato is cool enough to handle, slice it in half lengthwise and scoop out the flesh, leaving about a quarter-inch thick shell.
Place the potato skins cut-side up on the baking sheet and roast for an additional 5-8 minutes until the edges are golden and crisp.
Divide the turkey chili mixture evenly between the two potato skins and sprinkle with the shredded cheddar cheese.
Return to the oven for 3-5 minutes until the cheese is melted and bubbly.
Serve immediately topped with a generous dollop of Greek yogurt and a sprinkle of fresh green onions.