Add the onion, garlic, chicken stock, boneless chicken breast, Rotel or alternative, corn, chopped jalapeño pepper, chipotle chile powder, cumin, and oregano to a 6-quart crock pot. Mix well to combine all of the ingredients.
Cover and cook on low for 4 hours or until the chicken is fully cooked and tender.
Using a slotted spoon, remove the cooked chicken breast from the slow cooker. Shred with two forks and return back to the slow cooker.
Squeeze the juice from the limes. Add the freshly-squeezed lime juice to the pot, add salt and stir gently.
Ladle the soup into bowls and garnish with favourite toppings such as tortilla strips, avocado, sliced black olives, grated cheddar or Monterey Jack cheese, chopped tomato or cilantro.
Serve with a dollop of chipotle crema on top or on the side.