Add the onion, garlic, stock, chicken, Rotel or alternative, corn, chopped jalapeno, chili powder, cumin, and oregano to a 6-quart crock-pot and mix well to combine all of the ingredients.
Cook on low for 3-4 hours until the chicken is cooked.
Take chicken breast out and shred with two forks and return chicken back to the slow cooker.
Stir in the lime juice and salt to taste.
Ladle the soup into bowls and garnish with favorite toppings such as tortilla strips, avocado, cheese, tomato, cilantro, and chipotle crema.