1. 1. Prepare the Buffalo Chicken: In a medium bowl, combine the shredded or diced cooked chicken with the buffalo sauce. Stir well until the chicken is evenly coated. If you prefer your chicken warm, you can briefly heat this mixture in a microwave for 30-60 seconds or in a small skillet over medium heat for 2-3 minutes, stirring occasionally.

2. 2. Warm the Tortillas (Optional but Recommended): For easier wrapping and a softer texture, lightly warm each flour tortilla. You can do this in a dry skillet over medium heat for about 15-20 seconds per side, in the microwave for 10-15 seconds, or by wrapping them in a damp paper towel and microwaving for 30 seconds.

3. 3. Assemble the First Wrap: Lay one warmed tortilla flat on a clean surface. Spread about 1 tablespoon of ranch or blue cheese dressing down the center of the tortilla, leaving a border around the edges.

4. 4. Add the Fillings: Spoon about 1/4 of the buffalo chicken mixture over the dressing. Top with a generous sprinkle of shredded lettuce, about 1/4 of the shredded cheese, and any optional diced celery or red onion.

5. 5. Fold the Wrap: To fold, first fold in the two opposite sides of the tortilla (the left and right sides) over the filling, about 1-2 inches. Then, starting from the bottom edge closest to you, tightly roll the tortilla upwards, tucking in the filling as you go, until you have a compact wrap.

6. 6. Repeat for Remaining Wraps: Continue this process with the remaining tortillas and filling until all four wraps are assembled.

7. 7. Serve Immediately: Slice each wrap in half diagonally for easier handling and a more appealing presentation. Serve immediately and enjoy!