Season the chicken breast evenly with sea salt, black pepper, and garlic powder.
Heat the ghee in a medium skillet over medium-high heat and sear the chicken until golden and cooked through, about 5 to 6 minutes per side.
In a small bowl, whisk together the Greek yogurt, dried dill, and a teaspoon of water to create a smooth ranch-style drizzle.
Transfer the cooked chicken to a cutting board, dice into bite-sized pieces, and toss in a bowl with the buffalo hot sauce.
Wipe out the skillet and briefly warm the tortilla for 30 seconds on each side until soft and pliable.
Lay the tortilla flat and layer the center with chopped romaine, shredded carrots, diced celery, and sliced avocado.
Top the vegetables with the buffalo chicken, drizzle with the yogurt ranch, then fold in the sides and roll tightly to serve.