Infuse the Shrimp: In a medium bowl, combine the shrimp with all marinade ingredients: 3 tablespoons of olive oil, the grated garlic paste, fresh oregano, lemon zest, and red pepper flakes. Toss to coat thoroughly and set aside to marinate while you prepare the other components.
Cook the Orzo: Bring a large pot of salted water to a rolling boil. Add the orzo and cook according to package instructions, typically 8–10 minutes, until al dente. Drain immediately through a colander and rinse briefly with cool water to halt the cooking process and prevent sticking.
Shake Up the Vinaigrette: While the orzo cooks, combine all vinaigrette ingredients in a small jar: ⅓ cup of olive oil, the lemon juice, minced shallot, maple syrup, sea salt, and black pepper. Seal the lid tightly and shake vigorously until the dressing is emulsified.
Grill the Shrimp: Preheat a cast-iron grill pan or outdoor grill to medium-high heat, approximately 450°F (230°C). Thread the marinated shrimp onto your skewers. Place the skewers on the hot grill and cook for 2–3 minutes per side. The shrimp are done when they turn opaque and curl into a firm 'C' shape.
Assemble the Salad Base: In a large mixing bowl, combine the cooled orzo, baby arugula, fresh dill, and fresh mint. Pour about three-quarters of the vinaigrette over the salad and toss gently to combine.
Serve and Garnish: Divide the orzo and arugula salad among four bowls. Top each bowl with a skewer of grilled shrimp, or remove the shrimp from the skewers and arrange them over the salad. Drizzle with the remaining vinaigrette and finish with a sprinkle of crumbled feta cheese. Serve immediately.