Persian Swordfish Kabobs with Cilantro Tzatziki

Name: Persian Swordfish Kabobs with Cilantro Tzatziki
Ingredients: 1-1/2 lb swordfish (cut into 2 to 3-inch chunks); 1 lb yellow squash; 1 pint cherry tomatoes; juice of 1 lemon; 1 T extra virgin olive oil; 1/4 c cilantro; 1/2 t turmeric; 1/2 t paprika; 1/4 t coriander; 1/4 t cumin; 1/2 t kosher salt; couple pinches fresh cracked pepper; 1/2 c plain Greek yogurt; 2 t fresh lemon juice; 1 t fresh grated yellow or white onion; 2 T fresh chopped cilantro; pinch kosher salt; pinch fresh cracked pepper