Chicken Kebabs with No-Cook Peach Chutney

Marinade: 

• 2 pounds boneless, skinless chicken thighs, cut into 1- to 1 1/2-inch cubes
• 1/2 cup peanut oil or grapeseed oil
• 1/4 cup loosely packed fresh cilantro leaves and stems
• 1/4 cup loosely packed fresh cilantro leaves and stems 
• 1/4 cup lime juice (about 2 limes)
• 2 tablespoons ground coriander
• 2 teaspoons garam masala
• 2 small serrano peppers, seeded and stemmed
• One 1 1/2-inch knob ginger, peeled and chopped 
• Salt and freshly ground black pepper
• Salt and freshly ground black pepper 

Fresh Peach Chutney:

• 10 ounces fresh or frozen and thawed peach slices (about 2 cups)
• 1 teaspoon grated ginger
• 1/2 teaspoon honey
• 1/4 teaspoon champagne vinegar
• 1/8 teaspoon chaat masala, optional, plus more for seasoning
• Pinch red chile flakes
• 2 to 3 sprigs fresh cilantro
• Juice of 1 lime, plus 1/4 teaspoon zest
• Salt and freshly ground black pepper