Southwest Chicken-Chipotle Soup

4 cups chicken stock
1 cup cooked chicken, shredded
1 cup cooked rice
1 cup canned chickpeas (no juice)
1 chipotle pepper, seeded and finely chopped (it's easiest to get these smoked jalapenos in cans, then wash off the sauce they're in)
pinch of oregano
Garnish: 1 cup grated Monterey Jack cheese and 1 chopped avocado

Heat the stock in a large saucepan, then stir in the chicken, rice, chickpeas, chipotle pepper, and oregano.

 Let simmer for 5-10 minutes, until all ingredients are heated through.

To serve, ladle into bowls and top with cheese and avocado.