Preheat oven to 375° F.
Place chopped chicken, broccoli, and bell pepper in bowl. Press garlic over vegetable mixture. Shred cheese and add to bowl, mix gently. Add mayonnaise, dill mix and salt; mix well.
Unroll 1 package of crescent rolls; do not separate. Arrange longest sides of dough across width of 12 x 15-inch rectangle stone. Repeat with remaining package of dough. Using roller, roll dough to seal perforations. On longest sides of baking stone, cut dough into strips 1 1/2 inches apart, 3 inches deep. Spread filling evenly over middle of dough. To braid, lift strips of dough across mixture to meet in center, twisting each strip one turn.
Continue alternating strips to form a braid. Tuck ends under to seal at end of braid. Brush egg white over dough using Pastry Brush. Sprinkle with almonds. Bake 25 for 28 minutes or until deep golden brown.Servings: 4 to 6