Preheat your oven to 400°F (200°C) and pierce the Russet potato several times with a fork to allow steam to escape.
Place the potato directly on the oven rack and bake for 45-60 minutes until the skin is crispy and the center is soft.
While the potato bakes, cook the bacon slice in a skillet over medium heat until crispy, then remove, drain on a paper towel, and crumble.
In the same skillet, add the ground turkey, sea salt, black pepper, and garlic powder, cooking until the meat is fully browned and crumbled.
Roughly chop the fresh spinach and stir it into the turkey mixture for 1 minute until it is just wilted.
Once the potato is done, slice it lengthwise, fluff the interior with a fork, and stuff it generously with the turkey and spinach mixture.
Sprinkle the shredded sharp cheddar cheese over the top and return the potato to the oven for 2-3 minutes until the cheese is melted and bubbly.
Top the potato with a dollop of Greek yogurt, the crumbled bacon, and sliced green onions before serving.