Is there a lower fat/cal version of white chicken chili

Here's the one I use - my family loves it and it's soooo easy!

Ingredients
1 medium onion finely chopped
2 T olive oil
4 oz chopped chilies, drained
3 T flour
2 t ground cumin
2 cans great northern or navy beans
1 can chicken broth
1 1/2 c. finely chopped cooked chicken breast

Directions
1. In large skillet, cook onion in oil over medium heat for 4 minutes or until transparent. Add chiles, flour and cumin; cook and stir for 2 minutes. Add beans and chicken broth, bring to a boil. Reduce heat; simmer for 10 minutes or until thickened. Add chicken; cook until hot.