2 teaspoons garlic, minced (about 4 cloves)
Juice of 1 lemon
2 teaspoons red wine vinegar
2 tablespoons extra virgin olive oil
2 heaping tablespoons non-fat greek yogurt (I recommend Fage)
1 tablespoon dried oregano
A few shakes of salt and pepper
4 boneless, skinless, chicken breast halves

Combine all of the above ingredients except for the chicken in a dish, and whisk together to make a marinade. Add in chicken, and turn to coat. Cover, and place in the fridge for 1 hour to marinate.