SEA is the US airport I've been through most frequently, and I don't recall it being dreadful for food. Largely fast food style stuff, but there were multiple different options. Note - this is the international terminal, the domestic one could well be awful.
SEA came to mind for me as well. The domestic terminal offers local options such as Beecher’s, Caffe Ladro, Grand Central Bakery, Salt & Straw, Skillet, and Starbucks.
These are often operated by companies like HMS or OTG and simply license the brand from local businesses. In my opinion they rarely recreate the experience of the real establishment.