Preheat your oven to 400°F and line a small baking sheet with parchment paper.
Scrub the Russet potato clean, pierce it several times with a fork, and bake for 45 to 50 minutes until the center is tender.
While the potato bakes, heat the olive oil in a skillet over medium heat and add the ground turkey.
Cook the turkey until browned, breaking it into small crumbles, then stir in the chili powder, garlic powder, onion powder, sea salt, and black pepper.
Remove the potato from the oven, let it cool slightly, then slice it in half lengthwise.
Scoop out most of the potato flesh, leaving about a 1/4-inch thick shell to maintain structure.
Fill each potato shell with the seasoned ground turkey mixture and top evenly with shredded sharp cheddar cheese.
Place the loaded skins back in the oven for 5 to 8 minutes until the cheese is bubbly and the edges of the potato are crisp.
Serve immediately topped with a dollop of Greek yogurt and a sprinkle of freshly sliced green onions.