First of thank you for choosing HCM.
You can eat nuts etc its pretty good while working out as you get your healthy fats from these nuts.Try doing more cardio to bring the body fat% down thats the only way to lose "man boobs" , drink green tea helps speed up your metabolism
so in turn better fat loss, and you are already on a lifting program which is again great for loosing fat and puttting on muscle. A combination of all these 3 will help you to reach your goals.
Thank you and take care