Preheat your oven to 400°F and pierce the Russet potato several times with a fork to allow steam to escape.
Place the potato directly on the middle oven rack and bake for 45 to 50 minutes until the skin is crisp and the center is tender when pierced with a knife.
While the potato is roasting, heat the olive oil in a medium skillet over medium heat.
Add the finely diced red onion and red bell pepper to the skillet, sautéing for 4 minutes until they begin to soften and become fragrant.
Add the ground turkey to the skillet, breaking it into small crumbles with a wooden spoon, and season with sea salt, black pepper, and garlic powder.
Cook the turkey mixture for 6 to 8 minutes until the meat is fully browned and no longer pink.
Carefully remove the potato from the oven, slice it open lengthwise, and use a fork to fluff the hot interior.
Pile the seasoned turkey and pepper mixture into the potato, then garnish with a generous dollop of Greek yogurt and a sprinkle of fresh chives.