Dice the chicken breast into small, even bite-sized pieces.
Season the chicken with sea salt, black pepper, and half of the garlic powder.
Heat the avocado oil in a medium skillet over medium-high heat and sear the chicken until golden brown and cooked through, about 6-8 minutes.
In a small mixing bowl, whisk together the Greek yogurt, dried dill, and the remaining garlic powder to create a clean-eating ranch dressing.
Transfer the cooked chicken to a bowl and toss thoroughly with the buffalo sauce until every piece is coated.
Lay the tortilla flat and spread the Greek yogurt ranch across the center.
Layer the shredded romaine lettuce, diced celery, and buffalo chicken on top of the ranch.
Fold in the sides of the tortilla and roll tightly into a wrap.
Optional: Wipe the skillet clean and place the wrap seam-side down for 1 minute per side to achieve a crispy, toasted exterior.