Preheat your oven to 400°F and scrub the Russet potato clean.
Bake the whole potato directly on the oven rack for 45 to 50 minutes until the skin is slightly crisp and the inside is tender.
While the potato bakes, brown the ground turkey in a non-stick skillet over medium heat until no pink remains.
Stir in the tomato sauce, chili powder, cumin, garlic powder, sea salt, and black pepper, then simmer the turkey mixture for 5 minutes.
Remove the baked potato from the oven and slice it in half lengthwise once it is cool enough to handle.
Scoop out most of the potato flesh, leaving about a quarter-inch layer attached to the skin.
Brush the inside and outside of the potato skins with olive oil and place them cut-side up on a baking sheet.
Bake the skins for an additional 8 to 10 minutes until the edges are golden and crispy.
Fill each crispy skin with the turkey chili mixture and top with the shredded sharp cheddar cheese.
Return the skins to the oven for 2 to 3 minutes until the cheese is fully melted and bubbling.
Garnish each potato skin with a dollop of Greek yogurt and a sprinkle of sliced green onions before serving.