Chicken Kebabs with Chimichurri Sauce

Name: Chicken Kebabs with Chimichurri Sauce
Ingredients: 3 tbsp. dried orange zest; 1½ tbsp. chili powder; 2¾ tsp. kosher salt; ¼ tsp. ground black pepper; 3 lb. boneless, skinless chicken breasts or thighs; ⅓ c. sherry vinegar; 6 clove garlic; 4 dried bay leaves; 2 poblano peppers; 2 serrano peppers; 1 c. packed fresh flat-leaf parsley leaves; ½ c. packed fresh basil leaves; ¼ c. packed fresh oregano leaves; ¾ c. extra-virgin olive oil; 8 wooden skewers; canola oil; ½ tsp. distilled white vinegar