01 - In a small bowl, whisk together the olive oil, lemon juice, minced garlic, salt, and black pepper. Place the chicken breasts in a shallow dish, pour the marinade over them, and let rest for 15 minutes while preparing the remaining ingredients.
02 - Preheat a grill or grill pan to medium-high heat. Lightly brush the cut sides of the peach halves with olive oil.
03 - Grill the marinated chicken breasts for 5 to 7 minutes per side, until fully cooked through and the juices run clear. Transfer to a plate and rest for 5 minutes before slicing thinly against the grain.
04 - Place the peach halves cut side down on the grill and cook for 2 to 3 minutes until distinct grill marks form and the flesh softens slightly. Remove from the grill and slice each half into wedges.
05 - Place the chopped kale in a large salad bowl. Sprinkle with a pinch of salt and massage the leaves firmly with your hands for 1 to 2 minutes until they darken in color and become tender.
06 - Add the sliced grilled chicken, peach wedges, torn basil, torn mint, sliced red onion, and toasted almonds to the bowl with the kale.
07 - Whisk together the extra-virgin olive oil, white balsamic vinegar, honey, and Dijon mustard in a small bowl until fully emulsified. Season with salt and pepper to taste.
08 - Pour the dressing over the salad and toss gently to coat all the ingredients evenly. Top with crumbled feta cheese if desired and serve immediately.