Chicken & Lentil Soup

I got this out of one of my Biggest Loser books. It doesn't call for chicken but it is good to add in. I have to have some kind of meat.

Ingredients:
1 tablespoon olive oil
3 cups chopped onion (I like white)
1/2 cup diced carrots
1/2 cup diced celery
1 red bell pepper, finely chopped
1 yellow bell pepper, finely chopped
1 green bell pepper, finely chopped
1 tablespoon minced garlic (I add way more)
1 can (14 1/2 ounces) fire roasted diced tomatoes
1 tablespoon fresh chopped oregano
2 teaspoons fresh chopped thyme
1/2 teaspoon ground cumin
1/2 teaspoon chili pepper
6 cups chicken or vegetable stock
1 cup cooked lentils
2 cups cooked chicken breast, diced
1 medium zucchini, chopped
1/4 cup chopped fresh cilantro or Italian parsley
1 tablespoon grated lemon peel

Instructions:
1. Cook lentils according to package instructions.
2. Grill / saute 2 skinless, boneless chicken breasts. Cool and then chop.
3. Heat olive oil over medium heat. Add onion and cook for 5 minutes.
4. Add carrots, celery, and bell peppers and cook for another 4 minutes or until soft.
5. Add garlic and cook for 1 more minute being careful not to burn the garlic.
6. Add tomatoes and spices and simmer for about 5 minutes.
7. Add broth and bring to a boil.
8. Reduce the heat to low and add the cooked lentils and zucchini. Cook about 4 minutes or until zucchini is tender.
9. Add in the cooked chicken
10. Stir in the cilantro or parsley, and the lemon peel.

It says it makes 12 1-cup servings.

This is a very chunky soup. Too much so for my taste. So before step 8 I take about 1/2 of the soup, place it in the blender or using a stick blender, and puree it smooth.

P.S. This is a very chunky soup. I don't like