Chicken enchilada soup

Why I Love This Recipe
I found this on a food blog called Picky Palate. I did substitute heavy cream for sour cream (in the same amount) because my husband hates sour cream. Even with the change, this tasted exactly like chicken enchiladas.
Ingredients You'll Need
2 Tbsp extra virgin olive oil
1 medium onion, finely chopped
2 (14.5 oz) cans chicken broth
1 (28 oz) can mild green enchilada sauce
1/2 tsp cumin
1/2 tsp roasted garlic seasoning
1 (4 oz)can diced green chilies
2 (14 oz) cans diced tomatoes, undrained
8 oz sour cream or heavy cream
2 c shredded cheddar cheese
4 lg boneless, skinless chicken breasts, cooked and cubed
1 bag tortilla chips
Directions
Place oil in large dutch oven over medium high heat. Place onions in hot oil and saute for 3-5 minutes or until tender. Add chicken broth, enchilada sauce, cumin, garlic seasoning, green chilies and tomatoes. Stir and bring to a boil. Reduce heat to low and then add sour cream, cheese, and chicken. Stir and let simmer for 15-20 minutes or until cheese is melted through.
Top each bowl with a handful of crushed tortilla chips.