2 tablespoons vegetable oil
1 medium onion, chopped
2 cloves garlic, sliced
1 chipotle in adobo sauce, minced
1 tablespoon chili powder
Kosher salt
6 cups chicken broth, low-sodium canned
1 cup corn kernels, fresh or frozen and thawed
1 ripe tomato, chopped
1 cup shredded cooked chicken
1/2 cup cilantro
1/4 cup freshly squeezed lime juice (about 2 limes)
About a dozen corn tortilla chips, broken
Lime wedges (optional)