TIP: Zest half a lemon before juicing it. Reserve lemon zest for topping salad.
Cook orzo: Bring water to a boil and cook orzo according to package directions (about 5-7 minutes). Drain, return to pot, and stir with a small splash of olive oil to prevent orzo from sticking together.
While orzo cooks, heat 1 Tbsp of olive oil in a large pan at medium-high. Cook zucchini, undisturbed, for about 3-5 minutes or until one side starts to lightly brown. Flip and repeat on the other side. Remove from pan.
In the same pan, heat the other 1 Tbsp of olive oil and cook shrimp, 1-2 minutes per side until opaque and pink. Remove from pan.
Make dressing: whisk all dressing ingredients together in a small bowl, or shake vigorously in a small jar with a lid. Set aside.
In a large mixing bowl, add arugula, cooked orzo, zucchini, shrimp, feta cheese, and lemon zest. Pour dressing overtop and toss together. Season with additional salt + pepper, as needed. Serve + enjoy!