Preheat oven to 375 degrees.

Lightly spray a baking sheet with cooking spray.

In a small bowl whisk together egg and water.

Gently unroll one package of dough onto a flat surface.

Brush egg wash over the complete surface.

Sprinkle half of the zest over the top.

Grate half of the chocolate bar over the top and sprinkle with ½ c of mini chocolate chips.

Gently unroll the second package of dough and place over the top of the first dough.

Repeat with the egg wash and the remaining orange zest, chocolate bar and chocolate chips.

Tightly roll up and and cut in half making two equal loaves.

Place onto baking sheet and cut a shallow slit into the top of both loaves.

Brush with egg wash.

Bake for 30-40 minutes or until center is cooked through. Cover with foil if it browns too quickly.

Let it cool for 1 hour.

In a small bowl cream together butter and powdered sugar.

Add in orange juice and mix until smooth.

Drizzle over the top of each loaves.