Whisk marinade ingredients together to combine, or pulse in a OR a until blended (all except for the greek yogurt). Pour half the marinade into a shallow dish to marinade the chicken fillets for two hours if time allows. Refrigerate the reserved, untouched marinade to use as the dressing.
Heat about one teaspoon of oil in a grill pan or skillet over medium-high heat and grill chicken fillets on each side until golden, crispy and cooked through. (Grill in batches to prevent excess water being released.) Once chicken is cooked, set aside and allow to rest.
Slice chicken into strips and prepare salad with leaves, tomatoes, avocado slices, black beans, corn and chicken.
Prepare dressing with remaining marinade/dressing with the ¼ cup greek yogurt; mix well to combine OR pulse in a small food processor or magic bullet small cup.
Drizzle the creamy dressing over the salad; divide into 4 bowls and serve.
Notes
Make sure to cook your chicken in small batches to avoid too much water being released.