Preheat your oven to 400°F (200°C).
Scrub the Russet potato thoroughly, pierce several times with a fork, and bake directly on the oven rack for 45-50 minutes until tender.
While the potato bakes, heat a non-stick skillet over medium-high heat and add the ground turkey, breaking it apart with a spatula until browned.
Stir in the tomato puree, black beans, chili powder, cumin, garlic powder, onion powder, sea salt, and black pepper; simmer for 5 minutes then set aside.
Once the potato is cool enough to handle, slice it in half lengthwise and scoop out the flesh, leaving a 1/4-inch thick shell (save the flesh for another use).
Brush the inside and outside of the potato shells with olive oil and place them cut-side down on a baking sheet; bake for 10 minutes to crisp the skins.
Flip the skins over, fill each with the turkey chili mixture, and sprinkle the sharp cheddar cheese evenly on top.
Return to the oven for 3-5 minutes until the cheese is melted and bubbly.
Garnish each potato skin with a dollop of Greek yogurt and a sprinkle of fresh green onions before serving.