Grilling Greek: Chicken Gyros

Name: Grilling Greek: Chicken Gyros
Ingredients: 3 chicken breasts; 8 pita breads; 2 tablespoons lemon juice; 1/2 cup Olive Oil; 3 tablespoons Red Wine Vinegar; 1 tablespoon dried oregano; 2 cloves of garlic minced; 1 large head of Romaine lettuce rough chopped; 2 roma tomatoes chopped; 1/2 cucumber; 1/2 cup crumbled feta cheese; 1/4 cup chopped fresh parsley (or one TBS dried); 1/4 cup chopped red onion; 10 or more pitted kalamata olives (optional)