Add chicken breasts to a medium pot and season with kosher salt & black pepper. Cover with at least 1 inch of water and bring to a boil. Once boiling, cover with a lid, reduce heat to low, and simmer for 15-20 minutes until chicken reaches an internal temperature of 165°F.
Transfer the cooked chicken to a large bowl or stand mixer bowl and shred it using a mixer or two forks.
In another large bowl, whisk together the Greek yogurt, lime juice, ground cumin, chili powder, smoked paprika, kosher salt, black pepper, and cayenne if using.
Add the shredded chicken, black beans, diced red bell pepper, corn, red onion, and chopped cilantro to the yogurt mixture. Stir until thoroughly combined.
Taste the salad and adjust seasoning with additional salt, pepper, or cayenne as desired.
Place the chicken salad in the refrigerator to chill and allow the flavors to meld before serving.
Serve on whole wheat toast, with tortilla chips, on rice cakes, or in a tortilla. Enjoy!