Brush the eggplant slices with olive oil and season with salt on both sides.
Bake on a baking sheet until golden brown and soft, about 20-30 minutes, flipping halfway through for even cooking.
The salad:
Combine the greens, chopped cucumber, chopped tomatoes, sliced hard-boiled eggs, pickles (optional), and roasted eggplant in a large bowl.
Make the dressing:
Whisk together the tahini, lemon juice, garlic powder, 2-3 tablespoons of water, and salt in a small bowl. If the dressing is too thick, add a little more water to reach your desired consistency.
Serve:
Drizzle the dressing over the salad and toss gently to combine.
Top with any optional ingredients like amba, chopped parsley, and pita chips.