Slice the chicken breast into bite-sized strips and season evenly with the ground cumin, chili powder, sea salt, and black pepper.
Heat the extra virgin olive oil in a non-stick skillet over medium-high heat.
Add the chicken to the skillet and sauté for 6-8 minutes, or until the chicken is golden brown and cooked through.
While the chicken cooks, finely chop the romaine lettuce, dice the red bell pepper, and mince the red onion.
Rinse and drain the black beans, and thaw the frozen corn by running it under warm water for a few seconds.
In a small ramekin, whisk together the fresh lime juice and chopped cilantro to create the dressing.
Place the chopped romaine in a large serving bowl and top with the cooked chicken, black beans, corn, bell pepper, and red onion.
Slice the avocado and place it on top, then drizzle the entire bowl with the lime-cilantro dressing before serving.