In a mixing bowl, combine olive oil, chili powder, cumin, salt, and fresh lime juice to create a zesty marinade. Coat the chicken breasts thoroughly and let marinate for 5 to 10 minutes.

Preheat the grill to medium-high heat. Grill chicken for 5 to 7 minutes per side or until the internal temperature reaches 165°F. Remove from heat and let rest.

In a bowl, mix Greek yogurt, lime juice, salt, and spices until smooth to prepare the dressing.

Slice grilled chicken and combine with sweet corn, cherry tomatoes, red onion, and bell pepper in a large mixing bowl. Toss gently.

Drizzle the creamy dressing over the salad and toss well to coat before serving.

Let the salad sit for 10 to 15 minutes to meld flavors before serving.