Cucumber and tzatziki (try and find low fat tzatziki) with pumpkin seeds. Filling and very tasty, won't help with the muscle though. If you're looking for food which will contribute to your muscle growth then obviously stick with the protein; however if you're going to the gym and hitting the weights, instead of just consuming protein straight after you're finished, (in the form of say chicken, or a protein shake) have a wee bottle of orange juice, then hit the protein. The spike in insulin after the dip it goes through whilst exercising will help the body absorb the protein better.