Select the Sauté function on the Instant Pot. Add the olive oil and once hot, sauté the diced onion for 3-4 minutes until translucent, then add the minced garlic and chopped jalapeños. Cook for another minute.
Season the chicken breasts with salt, pepper, cumin, and smoked paprika. Add them to the pot and pour in the diced tomatoes (with juice), chicken broth, corn, and black beans. Stir to combine.
Close the lid of the Instant Pot, ensuring the valve is in the sealing position. Cook on Manual or Pressure Cook for 10 minutes.
Once the cooking time is complete, allow for a natural release for 10 minutes and then perform a quick release for any remaining pressure. Carefully open the lid.
Remove the chicken breasts and shred them using two forks. Return the shredded chicken to the pot and stir in the lime juice. Taste and adjust seasoning if necessary.
For the tortilla strips, you can either fry them in a little olive oil until crispy or bake them in the oven at 400°F (200°C) for about 10 minutes until golden and crisp.
Serve the soup hot, topped with crispy tortilla strips and your choice of avocado, cheese, fresh cilantro, a dollop of sour cream, and lime wedges.
Notes
Adjust the number of jalapeños to control spiciness.