Season the chicken breasts with salt, pepper, cumin, and chili powder. Grill or pan-sear over medium heat for about 6-7 minutes per side, or until fully cooked. Let it rest for a few minutes, then slice into strips.
In a small bowl, mix the Greek yogurt, lime juice, cumin, chili powder, and a pinch of salt and pepper to create a creamy dressing.
In a large bowl, combine the black beans, corn, diced bell pepper, avocado, cherry tomatoes, red onion, and spinach or mixed greens. Gently toss to combine.
Place the sliced chicken on top of the salad mixture.
Drizzle the yogurt dressing over the salad and toss gently to coat all ingredients. Adjust seasoning with salt and pepper if needed.
Top with fresh cilantro and serve immediately for the best flavor and texture.
Notes
Serve immediately for the best flavor and texture.