Preheat your oven to 400°F (200°C).
Scrub the Russet potato thoroughly, prick it several times with a fork, and rub the skin with olive oil and a pinch of sea salt.
Place the potato directly on the middle oven rack and bake for 45 to 55 minutes until the skin is crisp and the center is tender.
While the potato is roasting, season the chicken breast evenly with smoked paprika, garlic powder, sea salt, and black pepper.
Cook the chicken in a skillet over medium heat or bake until the internal temperature reaches 165°F, then shred it using two forks.
In a small mixing bowl, toss the shredded chicken with the sugar-free BBQ sauce until every piece is well coated.
Once the potato is finished baking, slice it down the center lengthwise and gently fluff the inside with a fork.
Generously stuff the potato with the smoky BBQ chicken mixture.
Top with a dollop of plain Greek yogurt and garnish with freshly sliced green onions before serving.