3 chicken breast halves, grilled or roasted (or 3 whole cooked legs); rotisserie is great for this
1/2 pound snow peas, strings removed and halved on the diagonal
1 fresh red onion or 1/2 regular red onion, very thinly sliced
2 stalks celery, thinly sliced on the diagonal
1 pint cherry tomatoes, halved or quartered
2 tablespoons olive oil
Salt and pepper, to taste
2 tablespoons red wine vinegar
1/4 cup chopped fresh parsley