In a bowl, mix together the tomato paste, orange juice, apricot jam, apple cider vinegar, jalapeno, smoked paprika, garlic powder, salt, and black pepper.
Add the chicken breast to the pot and pour the sauce over the chicken.
Instant Pot:Set the Instant Pot to high pressure for 12 minutes. After cooking, turn the steam valve to the venting position to release the pressure.
Slow Cooker:Place the pot in a slow cooker on high for 4 hours. Transfer the chicken to a plate and shred with two forks while hot.
Return the chicken to the pot and stir to coat.
Serve the chicken with buns and toppings of your choice.