Preheat your oven to 400°F. Scrub the Russet potato thoroughly, 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-high heat and brown the ground turkey until fully cooked.
Stir the chili powder, cumin, garlic powder, sea salt, black pepper, tomato sauce, and black beans into the turkey; simmer on low for 5 minutes to let the flavors meld.
Once the potato is done, let it cool slightly, then slice it in half lengthwise.
Scoop out the potato flesh, leaving about a 1/4-inch shell to maintain structure.
Place the skins back in the oven for 5 minutes to allow the edges to become extra crisp.
Divide the turkey chili mixture evenly between the two potato shells and top each with the shredded cheddar cheese.
Return the skins to the oven for 3 to 5 minutes until the cheese is bubbling and melted.
Garnish with a dollop of plain Greek yogurt and a sprinkle of fresh green onions before serving.