Preheat your oven to 400°F and thoroughly scrub the Russet potato clean.
Pierce the potato several times with a fork and bake directly on the oven rack for 45-50 minutes until tender.
While the potato bakes, heat the olive oil in a skillet over medium heat and sauté the ground turkey until fully browned.
Stir in the tomato puree, chili powder, ground cumin, sea salt, and black pepper, then simmer on low for 5 minutes.
Slice the baked potato in half lengthwise and carefully scoop out most of the flesh, leaving a thin layer against the skin.
Brush the inside of the skins lightly with any remaining oil and bake for an additional 5 minutes to ensure they are crispy.
Divide the turkey chili mixture evenly between the two potato halves and top with the shredded sharp cheddar cheese.
Return the skins to the oven for 2-3 minutes until the cheese is bubbly and completely melted.
Finish each skin with a dollop of plain Greek yogurt and a sprinkle of chopped scallions before serving hot.