Melt the butter in a saute pan over fairly high heat. Toss in the remaining ingredients, except the orzo, all at once. Let it all sizzle up, turning the shrimp once, and immediately serve over the orzo the moment the shrimp are cooked. It takes just minutes. In the restaurant, each portion was cooked to order in its own little pan. Four or so portions can be prepared at a time in a 12-inch or larger pan. The ingredients should not be crowded.