A simple protein such as boneless/skinless grilled or baked chicken breasts, pork loin or tenderloin, or maybe skewers of shrimp.
My son loves to doctor up lentil soup with spices and some veggies like onions, celery, and napa cabbage, then he moulds white rice in the middle of a wide bowl and pours the lentil soup around the rice. He calls it lentil etouffee. It's a meal by itself, but you could add the shrimp or sliced chicken over the lentils.