Please help me! What is yours opinion about my lunch? (is it healthy)?

Its healthy but I would recommend eating a chicken breast rather than a leg (boneless and skinless). The bread is fine (although the bread isn't the best source of carbs). The salad is good and healthy! The yogurt is fine as long as its low fat. This is if you want to be serious about being healthy. Since your 18 you should be fine with that lunch, just be sure to exercise.