Dice the chicken breast into small, bite-sized cubes and season evenly with sea salt and black pepper.
Heat the olive oil in a non-stick skillet over medium-high heat.
Add the chicken to the skillet and cook for 6-8 minutes, stirring occasionally, until the edges are golden brown and the meat is cooked through.
While the chicken cooks, prepare the ranch dressing by whisking together the Greek yogurt, dried dill, garlic powder, and onion powder in a small ramekin.
Transfer the cooked chicken to a bowl and toss with the buffalo sauce until every piece is well coated.
Wipe out the skillet and place the tortilla in it for 15-30 seconds per side until warm and flexible.
Spread the prepared Greek yogurt ranch across the center of the tortilla.
Layer the shredded lettuce, tomato slices, and diced red onion on top of the ranch.
Add the buffalo chicken pieces over the vegetables.
Fold the sides of the tortilla inward and roll tightly from the bottom to create a secure wrap.
Slice the wrap diagonally and serve immediately.