Tortilla chips are typically used as a topping or garnish for and are not usually added to the soup itself as an ingredient. However, if you do add tortilla chips to the soup, they may break down and become softer, which could result in a thicker consistency. This would depend on how long the tortilla chips are cooked in the soup and how much they break down. If you want to thicken your soup, there are other ingredients you can add, such as cornstarch, flour, or masa harina. These ingredients will help to absorb some of the liquid and create a thicker, more substantial broth. Alternatively, you could also blend some of the soup in a blender and then add it back to the pot to thicken the soup.