Remove the crusts of the bread slices and flatten with a rolling pin.
Season the chicken breast, sauté on both sides, and bake in the oven for 12 minutes at 340°F.
Shred the chicken and transfer to a large bowl. Add the corn, tomato paste, cream cheese, oregano, parsley, salt, and pepper, and mix well.
Spoon the mixture onto the bread, about 1 tbsp per slice. Fold each slice of bread over the filling, forming a triangle and press the edges with a fork.
Brush each pizza pocket with egg and add a bit of grated cheese on top. Bake for 12 minutes at 350°F. Finished!