In large saucepan or Dutch oven, heat oil over medium-high heat. Add onion. Cook 4 to 5 minutes or until softened. Add water, chicken, bouillon, cumin and lemon pepper. Bring to a boil; reduce heat to medium-low. Cover. Simmer 5 minutes.
Add hominy, beans, corn and chiles to saucepan. Cook 10 to 12 minutes or until hot and flavors are blended. Top with crushed tortilla chips and shredded cheese, if desired.