Combine first 5 ingredients in a large bowl. Combine coconut milk and next 5 ingredients (through red pepper) in a small saucepan; bring to a boil. Reduce heat, and simmer for 5 minutes or until mixture thickens slightly, stirring occasionally. Remove from heat, and cool for 2 minutes. Pour warm coconut milk mixture over lettuce mixture. Sprinkle with peanuts; serve with lime wedges, if desired. Serve immediately.