In a small bowl or container mix together the olive oil, vinegar, pomegranate molasses, shallots, and salt and pepper.
Peel the orange and use a small, sharp knife to remove any outer pith (the white stuff) left on the orange. Use the knife to slide it in between the membranes so that you are removing perfect little wedges of just the flesh of the orange.
Place the lettuce in a serving bowl, and drizzle over the dressing. Toss to combine, then add the orange wedges and toss gently once more. Serve.