Add everything to Instant Pot in the order listed above except for toppings, green pepper, lime juice and cilantro. Place lid on Instant Pot and make sure valve is set to seal.
Press the pressure cook button and set to high, then cook for 5 minutes. Instant Pot will take about 10-20 minutes to come to pressure then pressure cook the 5 minutes.
Do a quick release of the pressure by flicking the switch at the top with a spoon, then open lid when pressure gauge has dropped and lid opens easily. Shred chicken breasts, then stir in lime juice, green pepper and cilantro.
Serve in large bowls then top with desired toppings. Enjoy!
NOTE: This soup will keep in the fridge up to 5 days. Alternatively, you can freeze it in small glass bowls (individual serving size is best) and reheat each bowl in the microwave for 7-8 minutes, stirring once halfway through.
