Chicken Skewers with Cilantro Mint Sauce

For the Chicken Skewers:

• ¼ cup lemon juice
• ¼ cup vegetable oil
• ¾ cup yogurt plain, Greek
• 4 cloves garlic finely chopped
• 2 teaspoons tomato paste
• 2 teaspoons red wine vinegar
• 1 ½ teaspoons salt
• 1 teaspoon oregano dried
• ¼ teaspoon paprika
• ¼ teaspoon black pepper ground
• ¼ teaspoon ground allspice
• 2 pounds skinless boneless chicken breasts - cut into 2 inch chunks

For the Cilantro Mint Sauce:

• 2 cups cilantro packed fresh
• 1 cup mint fresh, packed leaves
• 1 shallot
• ¼ cup water
• 1 tablespoon lime juice fresh
• 1 teaspoon Serrano pepper chopped
• 1 teaspoon sugar
• kosher salt freshly cracked, to taste
• black pepper freshly cracked, to taste

Extra:

• pita bread optional, cut into wedges
• tzatziki optional