Preheat your oven to 400°F and bake the Russet potatoes for 45-50 minutes until tender.
While the potatoes bake, poach the chicken breast in simmering water for 12-15 minutes, then shred with two forks.
In a medium bowl, toss the shredded chicken with chili powder, cumin, garlic powder, onion powder, sea salt, black pepper, and lime juice.
Slice the baked potatoes in half lengthwise and scoop out the flesh, leaving a thin layer against the skin for stability.
Brush the inside and outside of the potato skins with olive oil and place them cut-side down on a baking sheet.
Roast the skins for 10 minutes, then flip and roast for another 5 minutes until they are golden and crispy.
Fill each crispy skin with the seasoned chili-lime chicken and return to the oven for 3 minutes to heat through.
Garnish each skin with a dollop of Greek yogurt, a slice of avocado, and fresh cilantro before serving.