Set your Instant Pot to Sauté and heat the garlic-infused olive oil. Add the carrots and celery and sauté for about 5 minutes, until they begin to soften.
Hit Cancel, then pour in the broth. Add thyme and rosemary. Gently place the chicken thighs in—skin-on and bone-in for max flavor.
Secure the lid, set the valve to Sealing, and cook on High Pressure for 12 minutes.
Let the pressure naturally release for 10 minutes, then quick release the rest. Carefully open the lid.
Remove the chicken, discard the skin and bones, and shred the meat with two forks. Return the shredded chicken to the pot.
Meanwhile, cook the brown rice pasta on the stovetop according to the package instructions. Drain, rinse, and set aside (we cook it separately to avoid soggy noodle sadness).
Stir in lemon juice. Taste and season with salt and pepper.
To serve: ladle soup into bowls, add a scoop of noodles, and top with parsley.