Cut the chicken breast into bite-sized pieces and place them in a small bowl.
Toss the chicken with arrowroot starch, sea salt, and black pepper until evenly coated.
Heat the avocado oil in a non-stick skillet over medium-high heat.
Add the chicken to the skillet and cook for 6-8 minutes, turning occasionally, until golden brown and crispy.
While the chicken cooks, prepare the ranch by whisking together the Greek yogurt, dried dill, garlic powder, and onion powder in a small ramekin.
Transfer the cooked chicken to a clean bowl and toss with the buffalo sauce until well coated.
Warm the tortilla in the skillet for 30 seconds to make it pliable.
Assemble the wrap by layering the shredded romaine lettuce, diced cherry tomatoes, buffalo chicken, and a drizzle of the homemade Greek yogurt ranch.
Fold the sides of the tortilla inward and roll tightly to secure the filling before serving.