Preheat your oven to 400°F (200°C). Scrub the potato clean, pierce it several times with a fork, and bake for 45-60 minutes until the center is soft and the skin is crisp.
While the potato is baking, slice the chicken breast into thin strips. Slice the bell peppers and red onion into thin strips as well.
In a small bowl, combine the chili powder, cumin, garlic powder, sea salt, and black pepper.
Heat the olive oil in a non-stick skillet over medium-high heat. Add the chicken strips and cook for 3-4 minutes until lightly browned.
Add the sliced peppers and onions to the skillet along with the spice mixture. Sauté for an additional 5-7 minutes until the chicken is cooked through and the vegetables are tender-crisp.
Once the potato is finished, slice it open lengthwise and fluff the inside with a fork.
Stuff the potato with the chicken and vegetable fajita mixture.
Top with a dollop of Greek yogurt, fresh cilantro, and a squeeze of lime juice before serving.