Pat the chicken breast dry and cut into bite-sized cubes.
In a small bowl, combine the garlic powder, onion powder, sea salt, and black pepper; season the chicken cubes with half of this spice blend.
Heat the avocado oil in a cast-iron skillet over medium-high heat. Add the chicken and sear for 5-7 minutes until golden brown and cooked through.
While the chicken cooks, prepare the healthy ranch by whisking together the Greek yogurt, dried dill, and the remaining spice blend in a small ramekin.
In a separate small saucepan or microwave-safe dish, melt the ghee and whisk in the buffalo sauce.
Once the chicken is done, toss the cubes in the buffalo-ghee mixture until thoroughly coated.
Warm the whole wheat 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 shredded romaine, carrots, diced celery, and buffalo chicken.
Fold in the sides and roll tightly to serve.