Serve up the flavors of a greek summer with this simple dish of marinated grilled chicken kabobs served alongside tzatziki, a cool cucumber and yogurt sauce. Small pieces of chicken threaded on a skewer cook fast on a grill, but giving them a half hour of marinating time beforehand will really perk up the flavor and help them to not dry out. Tzatziki sauce is popular in both mediterranean and middle eastern cuisine. The blend of thick yogurt, garlic, olive oil, lemon juice, and cucumber can be served as a dip for flatbread or alongside meat dishes, as is common in greek cuisines.