Preheat your oven to 400°F (200°C).
Scrub the russet potato thoroughly, prick it several times with a fork, and rub the skin with olive oil and sea salt.
Place the potato directly on the oven rack and bake for 45 to 60 minutes, or until the skin is crisp and the inside is tender.
While the potato is baking, heat a non-stick skillet over medium heat and add the ground turkey.
Season the turkey with garlic powder and black pepper, breaking it up with a spatula as it cooks until browned and fully cooked through.
Add the fresh spinach to the skillet with the turkey and stir for 1-2 minutes until the leaves are just wilted.
Once the potato is finished, slice it down the center and fluff the interior with a fork.
Stuff the potato with the ground turkey and spinach mixture.
Top with a generous dollop of Greek yogurt, a sprinkle of Parmesan cheese, and freshly chopped chives before serving.