Gyro Style Lamb

Name: Gyro-Style Lamb
Ingredients: 2 tablespoons extra virgin olive oil, divided; 3 tablespoon lemon juice, divided; 1 cup plain nonfat yogurt; 1/4 cup chopped fresh oregano, divided; Salt and ground black pepper to taste; 2 pounds boneless leg of lamb, trimmed and thinly sliced; 2 red bell peppers, cored, seeded and chopped; 3 cloves garlic, finely chopped; 8 cups cooked quinoa ( Learn to Cook: Quinoa ); 1 cucumber, halved, seeded and grated