Green Chili Chicken

Name: Green Chili Chicken
Ingredients: 2.5 pounds boneless, skinless chicken breasts; 1 pound tomatillos (husk removed & rinsed); 1 poblano; 1 yellow onion (diced); 4 cloves garlic (minced); 7 ounces can diced green chilis; 1 cup cilantro (stems removed); 1 lime; 2 cups low sodium chicken broth; 3 tablespoons vegetable oil; 1 teaspoon cumin; 1 tablespoon green chili powder (optional); salt and pepper