Note: If you do not have an Instant Pot, you can bake, grill or sauté the chicken breast, then shred it or dice it up. Or you can even use a storebought rotisserie chicken and shred the meat.
Place raw chicken breast into the Instant Pot with enough water to cover the breast.
Add ¼ teaspoon of salt and slices of red onion. Close the lid and cook on high pressure for 10 minutes.
When the cooking time is up, let the pressure release naturally for 5 minutes, then do a quick release for any remaining pressure. Once it's ready, open the lid.
Remove the chicken from the pot and let it cool. Then, shred it with 2 forks.
Place lettuce, shredded chicken, corn, hearts of palm, avocado & red onion in a large serving bowl. Gently toss ingredients together.
Prepare the dressing:
Add the cilantro, lime juice, onion, salt, and pepper to a small bowl. Whisk until combined.
Add in the olive oil and whisk again until well-combined and emulsified.
Serve the salad and drizzle the dressing on top.
Note: If you would like the dressing to be more subtle in flavor, you can put everything in a food processor, with two tablespoons of greek yogurt and blend until it is smooth. This is another way to make the dressing.