Preheat your oven to 400°F.
Scrub the Russet potato thoroughly and pierce the skin several times with a fork.
Place the potato directly on the middle oven rack and bake for 45 to 50 minutes until the skin is crisp and the inside is tender.
While the potato is roasting, heat a large non-stick skillet over medium-high heat.
Add the ground turkey to the skillet along with the garlic powder, onion powder, sea salt, and black pepper.
Sauté the turkey until it is completely browned and cooked through, breaking it into small crumbles with a spatula.
Add the fresh spinach to the skillet and stir for 1 minute until the leaves are just wilted.
Remove the potato from the oven, slice it open lengthwise, and fluff the interior with a fork.
Stuff the seasoned turkey and spinach mixture into the center of the potato.
Garnish with a dollop of Greek yogurt, a sprinkle of nutritional yeast, and sliced green onions before serving.