Make the marinade. Combine 2 Tbsp extra virgin olive oil, 2 Tbsp honey, 1 Tbsp sherry vinegar, 1 Tbsp sesame oil, 1 Tbsp za'atar, 2 tsp sumac, 2 tsp sesame seeds, and 2 cloves of chopped garlic in a small bowl, then whisk to combine.
Marinate the eggplant. Place eggplant pieces in a large mixing bowl, then pour the marinade on top. Toss to thoroughly coat, then cover with plastic wrap and refrigerate for at least 2 hours or up to overnight.
Soak the skewers. If using bamboo skewers, place them in a container then cover with water and let soak for at least 30 minutes. Drain.
Assemble the eggplant skewers. Preheat a grill or grill pan to medium-high heat. Thread the marinated eggplant onto skewers, leaving a few inches at the top and bottom of each. It's okay for the eggplant to be touching.
Grill the skewers. Lightly spray the preheated grill with nonstick cooking spray. Place skewers on, leaving about 1-2 inches in between each. Cook for 4-6 minutes, then carefully use tongs to flip the skewers over. Cook an additional 4-6 minutes, or until the eggplant is charred, but creamy and tender. Remove from the grill.
Recommended serving: Serve the skewers over labne with a drizzle of tahini, chopped pistachios, chopped parsley, and lemon wedges. Can be served warm or at room temperature.