We combined a few of our favorite umami-rich ingredients to create a seasoning mixture for a spatchcocked chicken. Applied under the skin, directly onto the meat, the roasted bird is jam-packed with deep, complex flavors. Miso lends a salty-sweet taste and Parmesan cheese brings nuttiness; tomato paste adds concentrated sweet tomato flavor, while garlic contributes another layer of complexity. Use either red or white miso; white miso is mellower than the saltier, more assertive red miso. A simple tossed salad and crusty bread make good accompaniments.