#1. Heat olive oil in a skillet over medium-high heat, add onion and cook until translucent. #2. Stir in garlic, cook until fragrant (about 30 seconds) and add diced tomatoes, red pepper flakes & cayenne pepper. Stir to mix well. Simmer for about 5 minutes, stirring occasionally. #3. Add the shrimp, and cook, stirring occasionally, until the shrimp are cooked through, about 3 minutes. Season with salt and pepper. #4. Top with feta cheese and chopped parsley. Serve with crusty bread & enjoy!