Preheat oven to 375 °F
Line a baking tray with a sheet of parchment paper or tinfoil and set aside
Chop all of the broccoli florets to be about ½" big and place in a bowl
Stir in the diced bell pepper, then add the mayonnaise, seasoning and cheddar cheese. Stir until mixed well. Set aside
Place the unrolled crescent dough in the middle of the baking sheet and press the sheet of dough together for any pre-cut lines
Spoon the broccoli mixture down the middle of the dough, leaving 2" clear on both sides (vertically)
Take a pizza cutter or knife and make 1 ½" to 2" cuts every 1" or so along the vertical sides
Take the first cut from each side and pull together the strip to meet at the center of the dough
With the solid strip, wrap the broccoli mixture
Press the doughs' edges firmly together to attach. You can also twist the strips slightly before attaching
Repeat the steps above with all strips of dough
Place egg white in a bowl and whisk slightly before brushing it over the dough using a pastry brush