Open all the canned ingredients using a can opener and set them aside.
In a large pot or Dutch oven, combine the black beans, corn, diced tomatoes with green chilies, diced tomatoes, chicken broth, drained canned chicken, taco seasoning, and water.
Stir the mixture well using a wooden spoon or spatula until all the ingredients are combined.
Place the pot over medium-high heat and bring it to a gentle boil.
Once boiling, reduce the heat to low and let the soup simmer for about 20 minutes, stirring occasionally.
Taste the soup and adjust seasoning if necessary.
Serve the soup hot in bowls and add desired optional toppings, such as shredded cheese, sour cream, avocado, and tortilla chips.