Seitan (wheat gluten) is high in protein and low in fat. Primal Strips veggie jerky strips have 10-11g of protein per 1 oz serving, and they're tasty and available at the Harvest Coop (also orderable in boxes from Amazon). So that's one thing you could add to your daily diet.

You could also make smoothies with Greek yogurt and fruit and add protein powder to it -- whey, soy, and/or hemp powders will all give a great boost.