Grill the chicken breasts until fully cooked, then slice thinly.
In a large bowl, add the mixed greens as a base.
Layer the black beans over the greens.
Add the corn on top of the black beans.
Dice the red bell pepper and sprinkle it over the salad.
Slice the avocado and arrange it on top.
Add red onion slices for extra crunch.
Sprinkle chopped cilantro for freshness.
Drizzle the southwest dressing over the salad.
Season with salt and pepper, then toss gently before serving.