Heat the extra-virgin olive oil in a skillet over medium-high heat. Add anchovy paste, stir it in then add shrimp and shake pan 1 minute. Add 2 teaspoons of lemon zest, garlic, pepper and Worcestershire. Cook shrimp 2 minutes more then add juice of 1 lemon to skillet and turn off heat. Sprinkle the cooked shrimp with some chopped egg. Serve 2 shrimp per person.