In China, the humble egg, a longtime supporting act in many dishes, is now center stage. Around dining room tables, budget-conscious families are griping about its sudden spike in price. In the countryside, befuddled farmers who complained of a glut of eggs last year now fret about scarcity. At food stalls, frustrated cooks are reeling from the one-two punch of egg prices and rising energy costs from the Iran war. Even state media has taken to using the term “rocket eggs” to describe skyrocketing prices. Egg prices are up by…