Pour the broth or water into the pressure cooker. Place defrosted or fresh breasts (separated) inside. Sprinkle the taco seasoning over the chicken and then cover with the rotel (and squeeze of lime if desired)
Seal the lid on the pressure cooker and set the valve to sealing. Set for 15 minutes on high pressure. When the cycle is complete, allow the pressure cooker to naturally release for 10 minutes, then do a quick release.
Shred the chicken with two forks and serve over nachos, tacos, or rice with your choice of toppings.