In a large saucepan cook onion in hot oil over medium heat for 3 minutes. Stir in hominy, beans, chicken broth, frozen chicken, lime juice, cilantro, cumin, and pepper. Cover and bring to boiling over high heat, stirring occasionally. Serve topped with cheese, salsa, tortilla chips, and fresh cilantro. Makes 4 (1-1/4-cup) servings.