In a large skillet, brown chicken in oil. With a slotted spoon, transfer chicken to a 3- or 4-qt. slow cooker. In the same skillet, saute onion and garlic in drippings until tender; add to chicken., Place chipotle peppers and 1/4 cup broth in a blender or food processor; cover and process until blended. Add to chicken mixture. Stir in the hominy, chiles, seasonings and remaining broth. Cover and cook on low for 4-5 hours or until chicken is tender.