Preheat oven to 375.
Toss together first ten ingredients in bowl.
Unroll crescent dough, and arrange on flat baking pan (you'll have two rows of squares across and four rows of squares down - does that make sense at all?)
Pinch together the perforations in the crescent rolls so that it's one large rectangle.
Keeping a three inch strip in the center, cut slits on the right and left side for your braid.
Spread the chicken mixture down the center of the Pillsbury crescent rolls, then braid the dough over the chicken mixture.
Whisk together egg white, and brush the braided dough with the egg white.
Bake at 375 for 25-28 minutes, or until golden brown.