To make the dressing, combine tahini, water, lime juice, sesame oil, garlic, honey, kosher salt and several turns of black pepper in a medium bowl, and whisk to combine. Season to taste with additional salt and pepper.
To make the bowls, divide the rice between 4 shallow, wide bowls, and top each with 1/2 cup roasted vegetables and 1 skewers worth of chicken. Top each bowl with 1 sliced scallion, a small handful of cilantro leaves, and a sprinkling of toasted sesame seeds. Drizzle each bowl with Tahini Lime Dressing, and serve with extra dressing on the side.