In a small bowl, add taco seasoning, brown sugar, chili, onion and garlic powders. Mix thoroughly.
Rub dry mixture on both sides of each chicken breast and set aside.
Set your Instant Pot to the sauté function. Add the olive oil and allow to heat up. Add chicken breasts and brown 2-3 minutes. Turn and brown on other side.
In a small bowl, add chicken broth, enchilada sauce and lime juice. Add green chilies and mix well.
Pour mixture over the chicken breasts.
Close and lock the lid on the Instant Pot and make sure the vent is closed. Set Instant Pot to 14 minutes. Once 14 minutes are up, allow the pressure to release naturally for 10 minutes. Open the vent and release the remaining pressure.
Shred chicken and serve on a tortilla or hard taco and add your favorite toppings.