Yogurt Marinated Grilled Chicken Skewers

For the chicken:

• 2 teaspoons crushed red pepper
• 2 teaspoons paprika sweet
• 1 cup whole-milk greek yogurt plain
• 3 tablespoons extra-virgin olive oil
• 2 tablespoons red wine vinegar
• 1 tablespoons tomato paste
• 2 teaspoons kosher salt coarse
• 1 teaspoon black pepper freshly ground
• 6 garlic roughly chopped, cloves
• 1 lemon juiced
• 1 lemon cut into wedges/sliced for serving
• 2 ¼ pounds chicken thighs and/or breasts, cut into 1 ¼-inch cubes, boneless, skinless
• 1 recipe Homemade Tzatziki Sauce