In a large pot or dutch oven, heat 2-3 tablespoons of olive oil over medium heat.
Add the diced carrots, celery, and onion to the pot. Season with salt and pepper. Saute for 7-8 minutes, stirring occasionally, until the vegetables are soft and the onion is translucent.
Grate the garlic cloves directly into the pot and stir well. Cook for an additional 2-3 minutes until the garlic is fragrant, but be careful not to let it burn.
Pour in the chicken broth and bring it to a gentle simmer.
Add the shredded chicken meat, cooked rice, and any additional spices (e.g., thyme, parsley, or bay leaves). Stir to combine all the ingredients evenly.
Reduce the heat to low, cover, and let the soup simmer for 20 minutes to allow the flavors to meld together. Stir occasionally to ensure nothing sticks to the bottom of the pot.
Taste and adjust the seasoning as needed with salt and pepper before serving.
Store leftovers in airtight containers - for lunches, store in individual, microwave safe containers. The soup can be stored in the refrigerator for 3-4 days.