Serve with lime wedges for the perfect summer app!
For sauce, in medium pan, whisk first 6 ingredients, lime juice, and 1/4 cup water. Pour half of sauce into medium bowl; toss with shrimp. Let marinate for 15 minutes. Heat grill to medium-high. Thread shrimp onto skewers; season. Grill shrimp until cooked through, about 2 minutes per side; transfer to platter. In saucepan, heat remaining sauce over medium until heated through, about 5 minutes, adding more water to loosen, if needed. Stir lime zest into sauce. Garnish shrimp with nuts, cilantro, and chiles. Serve with lime wedges and remaining sauce.