In a small bowl combine the cream cheese, sour cream, 2 ounces of the blue cheese (crumbled), pepper, salt and parsley. Stir to combine, cover and refrigerate until ready to use.
Preheat oven to bake the chicken tenders / strips / breasts.
Bake the chicken strips according to the package directions. While hot place the chicken strips, two at a time, in a bowl and toss with the hot sauce. Repeat until all the chicken strips are coated. Place on the baking sheet in a single layer to cool. Once cooled, toss in the hot sauce again and set aside.
To assemble the roll ups, spread each flatbread with a generous amount of the blue cheese dip. At one of the short ends of the flatbread, place two chicken strips, then next to the chicken, sprinkle with the diced celery, then add the lettuce. Add more crumbled blue cheese if desired. Roll up the flatbreads and cut into 6 to 8 pieces each.
Secure the roll up with an appetizer pick.
Serve immediately or cover and refrigerate until needed.