Green Chile and Harissa Chili

Name: Green Chile and Harissa Chili
Ingredients: 2 tablespoons vegetable oil; 1 large onion, minced; 1 large green pepper, finely chopped; 3 garlic cloves, minced; Kosher salt and freshly ground black pepper, to taste; 1/2 pound ground beef; 1/2 pound ground pork; 2 to 4 tablespoons harissa, depending on how spicy you want it; 2 tablespoons tomato paste; 2 pints fresh cherry tomatoes, or one 28-ounce can of diced tomatoes plus one 14.5-ounce can of diced tomatoes; 2 4-ounce cans of green chiles (hot or mild); 1 tablespoon chili powder