Preheat your oven to 400°F (200°C) and scrub the Russet potato clean.
Pierce the potato several times with a fork and bake for 45-50 minutes until the center is tender.
While the potato bakes, brown the ground turkey in a non-stick skillet over medium heat until fully cooked and no longer pink.
Stir in the tomato paste, water, chili powder, cumin, garlic powder, sea salt, and black pepper, simmering for 5 minutes until the sauce has thickened.
Slice the baked potato in half lengthwise and scoop out most of the flesh, leaving a 1/4-inch thick shell.
Brush the inside and outside of the potato skins with olive oil and return them to the oven for 10 minutes to become golden and crispy.
Fill the crispy skins generously with the turkey chili mixture and sprinkle with the shredded sharp cheddar cheese.
Place the skins back in the oven for 5 minutes until the cheese is bubbly and melted.
Garnish each skin with a dollop of Greek yogurt and fresh green onions before serving warm.