Simple Chicken Vegetable Salad

I prepared this for somebody who needs to eat healthy and he is very special to us. I've  got the idea of this from his dietician. Healthy and yummy.

Ingredients 
100 grams chicken breast
6 leaves of lettuce
1 cup cherry tomatoes
1 cup water cress ( if not available can be replaced with spinach)
1 1/2 tablespoons unflavored yogurt ( if not available just replace with 1 tablespoon lemon juice)
salt and pepper to taste
1 teaspoon olive oil

Procedure:
1. Put salt and pepper to the chicken breast then grill it, slice into bite size and set aside.
2. In a serving platter arrange the lettuce, watercress and tomatoes then add the chicken.
3. Sprinkle with olive oil, yugort, salt and pepper then serve.