This is how I have achieved what you are seeking to achieve. First, while I only eat three reasonable-sized "meals" a day, I do consume small amounts of high quality food between meal times. This is what I strive for in my protein consumption:
7 am - 2 deviled eggs with breakfast
10 am - 1/2 cup of mix nuts
1 pm - turkey (or ham) sandwich for lunch
4 pm - yogurt
7 pm - A portion of fish, usually salmon with dinner
My protein does vary quite a bit more than what is pictured here, but this is the gist of it. It is HARD to get enough protein. According to the head trainer at my gym, you are supposed to get 1 gram per lb. of body weight. For me that would be 190-ish grams of protein, which is near to impossible (so it seems to me). So finding ways to consume lots of protein without exceeding your caloric goals is a fine trick to pull off. Good luck!