Preparations: 

Chicken burgers:

Pan: Heat oil in a pan and fry the burgers for approx. 4 minutes on each side.
Oven: Pre-heat the oven to 180°. Heat the burgers for approx. 15 minutes.
Fryer: Set the fryer temperature to 180°. Fry the burgers for approx. 4 minutes. 

Rinse and cut the salad into smaller pieces.
Chop onions and parsley. Mix mayonnaise, balsamic, mustard and grated horseradish and season with salt and pepper.
Mix salad, parsley and onions with the dressing.

Cook the bacon on a pan with some oil until crispy. 

Place on a pieces of paper to dry. 

Cut tomatoes and cucumber into slices. 

Toast the buns/bread. 
Spread the salad-mayo-mix unto the bun/bread and assemble the burgers.

Serve.