Green Chile and Chicken Stew

Name: Green Chile and Chicken Stew
Ingredients: 2 pounds boneless, skinless chicken breasts and thighs; 1 small bunch cilantro, trimmed, stems and leaves separated; 2 large onions, chopped, divided; 1 head of garlic, halved crosswise; 2 tablespoons apple cider vinegar; 1 tablespoon cumin seeds; 1 tablespoon honey; 2 teaspoons kosher salt; 1 teaspoon black peppercorns; 1 pound tomatillos, husked; 4 Italian frying peppers; 4 poblano or Hatch chiles; 3 jalapeño peppers; 2 tablespoons olive oil; Steamed rice