Preheat your oven to 400°F (200°C). Scrub the potatoes clean and prick them several times with a fork.
Place the potatoes directly on the oven rack and bake for 45-50 minutes until the skin is slightly wrinkled and the inside is tender.
While potatoes bake, heat a non-stick skillet over medium-high heat. Add the ground turkey and cook until browned, breaking it into small crumbles.
Stir in the tomato puree, chili powder, cumin, garlic powder, sea salt, and black pepper. Simmer on low for 5 minutes until the sauce thickens and coats the turkey.
Once potatoes are done, remove from oven and let cool slightly. Slice each potato in half lengthwise.
Scoop out the centers, leaving about a 1/4-inch thick shell of potato (save the insides for another use).
Brush the inside and outside of the potato skins with olive oil. Place them cut-side down on a baking sheet and bake for 5-7 minutes to crisp the skin.
Flip the skins over, fill each with the turkey chili mixture, and sprinkle with shredded cheddar cheese.
Return to the oven for 3-5 minutes, or until the cheese is melted and bubbly.
Top each skin with a dollop of Greek yogurt and a sprinkle of sliced green onions before serving.