Heat olive oil in a skillet over medium-high heat. Add minced garlic, paprika, oregano, salt, and pepper, then sauté for a couple of minutes until fragrant.
Add the shrimp to the skillet. Cook until they turn pink and opaque, which should take just a few minutes per side. Remove them from the skillet and set aside.
Rinse quinoa under cold water before cooking in a pot with water. Bring it to a boil, then lower the heat and simmer until tender, fluffing it with a fork when done.
In a large bowl, combine chopped romaine, sliced cucumber, diced tomatoes, thinly sliced red onion, and sliced kalamata olives. Toss everything together to mix well.
Stir in the cooked quinoa into the veggie mixture, then top with the sautéed shrimp, crumbled feta, and chopped parsley. Serve with lemon wedges to squeeze over the top.