Pat the chicken breast dry with paper towels and season both sides with sea salt and black pepper.
Heat the avocado oil in a medium skillet over medium-high heat until shimmering.
Add the chicken to the skillet and sear for 5-6 minutes per side until the exterior is golden brown and the internal temperature reaches 165 degrees Fahrenheit.
While the chicken cooks, whisk together the Greek yogurt, garlic powder, dried dill, and onion powder in a small bowl to create the ranch dressing.
Remove the chicken from the pan, let it rest for 2 minutes, then dice it into bite-sized cubes.
In a clean bowl, toss the diced chicken with the buffalo sauce until every piece is thoroughly coated.
Wipe out the skillet and briefly warm the tortilla for 15 seconds on each side until pliable.
Assemble the wrap by layering the shredded romaine lettuce in the center of the tortilla, followed by the buffalo chicken.
Drizzle the prepared Greek yogurt ranch over the chicken and fold the sides of the tortilla inward, rolling tightly to secure.
Place the wrap back in the skillet for 30 seconds per side to seal the edge and add a final crunch before serving.