Heat your grill to a medium-high temperature.
Coat the chicken breasts with avocado oil, sea salt, and freshly ground black pepper. Grill the chicken for approximately 6-8 minutes on each side, ensuring it reaches an internal temperature of 165°F.
After grilling, take the chicken off the heat and allow it to rest for about 5 minutes before slicing it into bite-sized pieces.
In a large mixing bowl, combine the assorted salad greens, grape tomatoes, radishes, grated zucchini, and scallions, tossing them gently to mix.
Pour the spicy wing sauce over the sliced chicken, ensuring each piece is well-coated.
Distribute the salad mixture onto plates, layering the spicy chicken on top, and finish with a sprinkle of crumbled feta cheese.
Drizzle your choice of creamy dressing over the salad before serving.