Any tender herbs will brighten this dish -- swap in parsley for cilantro, or tarragon for mint.
Preheat oven to 425 degrees. On a rimmed baking sheet, drizzle squash with oil; season with salt and pepper. Roast, flipping once, until tender, 25 to 30 minutes.
Meanwhile, whisk together lime juice, honey, serrano, 1/2 teaspoon salt, and 3 tablespoons oil. In a separate bowl, mix yogurt, tahini, 3 tablespoons water, 1/4 teaspoon salt, and a pinch of pepper. Spread yogurt mixture on a platter. Top with squash, herbs, and sesame seeds. Drizzle with lime dressing; serve.