Preheat your oven to 400°F (200°C).
Scrub the potato clean, pierce it several times with a fork, and microwave for 5-7 minutes or bake for 45 minutes until the inside is tender.
While the potato cooks, heat the olive oil in a medium skillet over medium-high heat.
Add the ground turkey to the skillet, breaking it apart with a spatula until it is fully browned and cooked through.
Stir in the black beans, tomato sauce, chili powder, cumin, garlic powder, sea salt, and black pepper, then let the mixture simmer for 5 minutes.
Slice the cooked potato in half lengthwise and scoop out most of the flesh, leaving a sturdy 1/4-inch shell.
Place the potato shells on a baking sheet and bake for 5-8 minutes until the edges are golden and crisp.
Divide the turkey chili mixture evenly between the two potato skins and top with the shredded cheddar cheese.
Return the skins to the oven for 2-3 minutes until the cheese is completely melted and bubbly.
Garnish each potato skin with a dollop of Greek yogurt and a sprinkle of sliced green onions before serving.