Wash, dry and tear the lettuce into bite-sized pieces. Cut the pineapple into small squares and add to the salad. Halve the peppers wide and cut into strips. Rinse the spring onion and cut into short pieces. Add everything to the salad.
For the dressing, mix the yogurt with the orange juice and balsamic vinegar. Season with salt, pepper, sugar and herbs. Mix the salad with the dressing.
Heat the oil and fry the chicken breast fillet for 5-8 minutes on each side. Cut into strips and place on the salad.