Preheat a grill or grill pan to medium. In a large bowl, combine the pork, balsamic vinegar, grill seasoning, fennel seeds, crushed red pepper and garlic; season with salt and pepper. Divide into 4 equal portions; form each into 3 meatballs. Press 1 grape into each meatball, then pinch the meat to seal. Coat the meatballs with 2 tablespoons EVOO and thread onto skewers. Cover and grill, turning, until firm and cooked through, about 18 minutes.
In another large bowl, toss the arugula, basil and parsley with the lemon juice and remaining 1 tablespoon EVOO; season with salt and pepper. In a small bowl, combine the ricotta and honey; season with pepper.
Warm the flatbread on the grill. Top each with greens, some ricotta mixture and 3 meatballs.