Place lemon juice in a small non-reactive saucepan and reduce to 3 tablespoons. Place the butter in a medium bowl, add the lemon syrup and dill, then season with salt and pepper to taste. Mix well and scrape into a ramekin. Refrigerate for 1 hour.
Orzo Salad:
Whisk together the zest, juice, oil, dill, and garlic, then season with salt and pepper, to taste. Mix the pasta, cheese, peppers, olives, and scallions together in a bowl. Pour the vinaigrette over and mix to combine. Add the oregano and season with salt and pepper, to taste.
Shrimp:
Preheat grill to high. Toss the shrimp in some olive oil and season with salt and pepper to taste. Thread 5 shrimp on a skewer, bending the shrimp so that the skewer passes through it twice. Grill, turning once for 4 to 5 minutes. Remove the shrimp from the grill to a large platter and brush generously with Lemon-Dill Butter. Garnish with fresh dill.