Preheat a grill to medium-high heat (450-500˚F/230-260˚C).
Spread the eggplant and zucchini slices out onto 2 baking sheets (keep them separate) and sprinkle them with salt on both sides. Let them sit at room temperature for 15 minutes. Blot the vegetables dry with paper towels on both sides (the salt will cause liquid to rise to the surface, and blotting them dry will make for easier grilling and will reduce bitterness).
Drizzle the eggplant with 2 tablespoons of the olive oil, turning to coat all sides, and drizzle the zucchini with 1 tablespoon of olive oil, turning to coat all sides. Season with Aleppo pepper.
Clean and oil the grill grates.
Arrange the eggplant and zucchini slices on the grill. Cover and cook until grill marks form on the bottom, then flip and cook until grill marks form on the other side, about 3-4 minutes per side (don’t overcook the zucchini, otherwise it will turn mushy). Transfer the vegetables to a baking sheet. Arrange the zucchini in a single layer, but pile the eggplant rounds into 2 tall towers. Cover the eggplant towers with foil and let them sit for 5 minutes (this will steam the eggplant slices, ensuring they cook through). Do Ahead: The grilled vegetables can sit at room temperature for up to 2 hours before serving. After five minutes, spread the eggplant rounds into a single layer.
Arrange the grilled vegetable slices on a serving platter. Squeeze the juice from ½ lemon over top (if using the Creamy Tahini Sauce, go lighter on the lemon juice, since there’s lemon in the sauce). Drizzle the vegetables with with a bit of tahini or Creamy Tahini Sauce and pomegranate molasses (use your instincts, knowing that people can always add more at the table). Sprinkle the platter with Za’atar and scatter the fresh herbs over top. Garnish with the pine nuts.
If you’d like, serve the vegetables with more of the pomegranate molasses and tahini on the side, so people can gussy up their plates as desired.