Heat a griddle pan over a high heat and grill the bread on both sides.
Set it aside and keep warm.
Grill the bacon in the griddle pan until lightly browned then set aside and keep warm.
Spray the pan lightly with oil and cook the chicken breasts for 3 minutes on each side.
Add the herbs to the pan and baste the meat with the juices.
To assemble the sandwich, slice each chicken breast in half.
Lay one piece of chicken on a slice of toasted bread, spoon over some sweetcorn, add another slice of bread then the bacon, rocket, onion and finally another slice of bread.
Secure with cocktail sticks and serve immediately.