Preheat oven to 375F.
Chop chicken and broccoli using food chopper; place in 2 qt. batter bowl.
Chop bell pepper using 5" utility knife; add to batter bowl.
Press garlic over vegetable mixture using garlic press.
Shred cheese using cheese grater and add to vegetable mixture; mix gently.
Add mayonnaise, dill mix, and salt; mix well using scraper.
Unroll 1/2 crescent dough; do not separate.
Arrange longest sides of dough across width of 12" x 15" rectangle baking stone.
Repeat with remaining 1/2 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 using a pizza cutter
(there will be 6 inches in the center for the filling).
Spread filling evenly over middle of dough.
To braid, lift strips of dough across mixture to meet in center, twisting each strip on 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 25-28 minutes or until deep golden brown.