In a small mixing bowl, whisk together the nonfat Greek yogurt, lime juice, and a pinch of sea salt until smooth.
Add the shredded cabbage and shredded carrots to the bowl, tossing thoroughly to coat the vegetables in the zesty dressing.
Heat the avocado oil in a large non-stick skillet over medium-high heat until shimmering.
Add the ground chicken to the skillet, using a wooden spoon or spatula to break the meat into small crumbles as it browns.
Season the chicken with the chili powder, garlic powder, cumin, remaining sea salt, and black pepper, stirring to distribute the spices evenly.
Continue cooking the chicken for 6 to 8 minutes, or until it is fully cooked through and slightly crispy on the edges.
While the chicken cooks, warm the corn tortillas in a separate dry pan over medium heat for 30 seconds per side until soft and pliable.
To assemble, spoon the spiced chicken into the warm tortillas and top with a generous portion of the zesty lime slaw and fresh cilantro.