Step 1

Toss shrimp with lemon zest, salt, and pepper in bowl; refrigerate until ready to use.

Step 2

Using highest sauté function, heat oil in Instant Pot until shimmering. Add onion and cook until softened, about 5 minutes. Stir in garlic and cook until fragrant, about 30 seconds. Add orzo and cook, stirring frequently, until orzo is coated with oil and lightly browned, about 5 minutes. Stir in broth and water, scraping up any browned bits.

Step 3

Lock lid in place and close pressure release valve. Select high pressure cook function and cook for 2 minutes. Turn off Instant Pot and quick-release pressure. Carefully remove lid, allowing steam to escape away from you.

Step 4

Stir shrimp, olives, and feta into orzo. Cover and let sit until shrimp are opaque throughout, 5 to 7 minutes. Adjust consistency with extra hot broth as needed. Stir in dill and lemon juice, and season with salt and pepper to taste. Sprinkle individual portions with extra feta and drizzle with extra oil before serving.