Sopa Seca With Beans

Name: Sopa Seca With Beans
Ingredients: 1 tablespoon extra-virgin olive oil; 1 onion, halved and thinly sliced; 1 poblano chile pepper, seeded and sliced; 1 teaspoon chili powder; 1/2 teaspoon ground cumin; Kosher salt; 8 ounces whole-wheat spaghetti, broken into thirds; 1 14 -ounce can diced fire-roasted tomatoes; 2 cups fat-free low-sodium chicken broth; 1 14 -ounce can kidney beans, drained and rinsed; 1 bunch cilantro, leaves chopped (about 1/2 loosely packed cup); 2 ounces monterey jack cheese, shredded (about 1/2 cup)