Preheat oven to 375 degrees. Spray a large baking pan with cooking spray, (no exact size needed, just big enough to fit four chicken breasts). Set aside.
Place chicken breasts in a large ziplock bag, and lightly pound them with a meat mallet or rolling pin, (this tenderizes the chicken breasts and makes them all even thickness, which helps for even cooking and tender chicken!)
Meanwhile, In a small bowl, mix together the rest of the ingredients, (everything except for the chicken breast). Place chicken breasts in baking pan and brush yogurt mixture evenly over chicken breasts, covering the tops and the sides evenly.
Bake chicken for 30-35 minutes, (or until chicken is no longer pink in the middle.) Remove from the oven and enjoy with salad or veggie of choice!