You don't have to just eat chicken for every meal. Eat varieties of meat, lean beef, steak, turkey, cod, salmon, bison, you get the idea....I think you are asking portion size? 4-8 oz per meal, just depends on how many meals you eat per day, and your goals....so I'm guessing you weigh 150 pds since you take in 150 grams protein per day? Your protein sources don't have to just come from meat man..get creative and have fun with your diet, if not chances are you will not stick with it