Place chicken in instant pot and pour salsa over top.
Close pressure valve and set MANUAL pressure on high for 5 minutes (or 10 if using frozen chicken breasts).
Once timer beeps, allow 5 minutes before releasing the pressure valve.
Shred chicken on cutting board with 2 forks and place back into pot, stirring to combine.
Let rest for 5 minutes.
Preheat oven to 350 degrees.
Line cookie sheet with parchment paper.
Spread tortilla chips onto cookie sheet.
Strain chicken in a fine mesh strainer or colander.
Top chips with desired amount of shredded chicken, then top with black beans and cheese.
Bake about 5 minutes or until cheese has melted.
Serve with salsa, sour cream, jalapenos, or your favorites.