In a bowl, combine shrimp with half the lemon juice, garlic, Greek seasoning, olive oil, and a pinch of salt and pepper
Let marinate for 10–20 minutes
Dice cucumber and tomatoes. Toss with the remaining lemon juice, salt, and pepper
Heat a skillet over medium-high heat. Cook shrimp for 2–3 minutes per side, until pink
Warm the pitas, spread hummus inside each pita, add cooked shrimp, tomato-cucumber salad, and a sprinkle of feta.