Mexican Chicken Corn Chowder

Name: Mexican Chicken Corn Chowder
Ingredients: 1 tablespoon butter; 1 small onion chopped; 1 jalapeno pepper seeded and finely chopped; 3 garlic cloves minced; 1 ½ teaspoons cumin; 1 cup chicken broth; 2 cups half and half; 2 cups shredded Mexican blend cheese (or 2 cups cheddar cheese); 1 (14-ounce) can cream-style corn; 1 (4-ounce) can diced green chilies; 1 (14-ounce) can diced tomatoes (drained); 2 cups chicken chopped and cooked (I used rotisserie); salt and pepper to taste; Tabasco sauce (optional)