Preheat oven to 400°F and prick the Russet potato several times with a fork.
Rub the potato skin with olive oil and bake directly on the oven rack for 45-50 minutes until tender.
While the potato bakes, brown the ground turkey in a non-stick skillet over medium heat until fully cooked.
Season the turkey with sea salt, black pepper, garlic powder, and onion powder, then set aside.
Steam the broccoli florets until tender-crisp and finely chop into small bite-sized pieces.
Slice the baked potato in half lengthwise and carefully scoop the flesh into a bowl, leaving a thin shell.
Mash the potato flesh with the non-fat Greek yogurt until smooth and creamy.
Fold the cooked ground turkey and chopped broccoli into the potato mixture until well combined.
Stuff the mixture back into the potato skins and top each boat with the shredded sharp cheddar cheese.
Broil the boats for 2-3 minutes until the cheese is melted and bubbly, then garnish with sliced green onions.