Preheat your oven to 400°F (200°C).
Scrub the russet potato thoroughly, pierce it several times with a fork, and bake directly on the oven rack for 45-60 minutes until the skin is crisp and the inside is tender.
While the potato bakes, heat the olive oil in a medium skillet over medium heat.
Add the diced red onion and red bell pepper to the skillet, sautéing for about 5 minutes until softened.
Add the ground turkey to the skillet, breaking it apart with a wooden spoon, and cook until browned and no longer pink.
Season the turkey mixture with sea salt, black pepper, garlic powder, and smoked paprika, stirring well to combine.
Add the fresh spinach to the turkey and cook for 1-2 minutes until the leaves are just wilted.
Once the potato is finished, slice it open lengthwise and use a fork to gently fluff the interior.
Spoon the savory turkey and vegetable mixture generously into the potato.
Top with a dollop of plain Greek yogurt and garnish with freshly chopped chives before serving.