This easy dish is perfect for a casual get-together with friends. Inspired by arroz con pollo, it is hearty with satisfying complexity. Cumin, saffron, and oregano season rich chicken thighs and nutty farro as the dish simmers. If using saffron, deploy it sparingly; those tiny threads bring subtle flavor and a little color to the dish, but too much will yield a medicinal taste. Serve with a side salad to complete the meal.