Slice the chicken breast into small, bite-sized cubes and place them in a bowl.
Toss the chicken with arrowroot powder, sea salt, and black pepper until every piece is lightly and evenly coated.
Heat the avocado oil in a large skillet over medium-high heat. Once shimmering, add the chicken in a single layer.
Sear the chicken for 6-8 minutes, turning occasionally, until the exterior is golden-brown and crispy and the center is cooked through.
In a small saucepan or microwave-safe dish, combine the buffalo hot sauce and ghee, heating until melted and whisking to combine.
Pour the buffalo mixture over the cooked chicken in the skillet and toss to glaze every piece.
In a small bowl, whisk together the Greek yogurt, garlic powder, and dried dill to create a clean-eating ranch dressing.
Warm the tortilla in a dry pan for 30 seconds per side until pliable.
Assemble the wrap by spreading the yogurt ranch onto the tortilla, then layering the romaine lettuce, diced tomatoes, and crispy buffalo chicken.
Fold the sides of the tortilla inward and roll tightly from the bottom to seal.