Marinate chicken in half the vinaigrette for at least 30 minutes.
Grill chicken over medium-high heat until cooked through and slightly charred, 2-5 minutes per side.
Puree all vinaigrette ingredients in a blender until smooth.
Dredge goat cheese in flour, dip in egg, coat in breadcrumbs, and fry until golden.
Arrange lettuce, blackberries, avocado, red onion, and nuts in a bowl.
Top with sliced chicken and fried goat cheese, drizzle with vinaigrette.
