Add the olive oil to a large stockpot or Dutch oven over medium heat. Add the diced carrots and celery, stirring occasionally, until tender, cooking about 5 minutes.
Stir in the minced garlic and cook about 1 minute.
Add the diced chicken pieces, onion powder, and dried thyme to the pot and cook for 10 minutes, stirring occasionally.
Pour in gluten-free chicken broth and bring to boil, stirring occasionally.
Add the gluten-free pasta and reduce heat to a low boil for 10 minutes.
Remove from heat; stir in the lemon juice.
Season with salt and pepper, to taste.
Allow the soup to cool for 5 to 10 minutes. Enjoy!