Step 1

Melt butter in a large nonstick skillet over medium-high heat. Add bell pepper; cook for 2 minutes. Add shrimp and garlic and sprinkle with Greek seasoning. Cook until shrimp are bright pink on the outside and the meat is opaque, 3 to 4 minutes. Remove from the heat and stir in cherry tomatoes, cucumber, and olives.

Step 2

Serve shrimp mixture in romaine leaves and sprinkle with feta cheese.