Whisk marinade ingredients together to combine. Place chicken into a shallow dish or freezer bag. Pour 4 tbsp of the dressing / marinade onto the chicken and stir around to evenly coat chicken (you may also add your normal chicken seasonings). Reserve the untouched marinade to use as a dressing.
Heat about one teaspoon of oil in a large grill pan or skillet over medium-high heat and grill or sear chicken fillets on each side until golden, crispy and cooked through. Once chicken is cooked, set aside and allow to rest.
Slice chicken into strips and prepare salad with lettuce, avocado slices, tomatoes, mozzarella cheese and chicken. Top with basil strips; drizzle with the remaining dressing; season with salt and pepper; serve.