You could always lie to him in your food journal!!!
Seriously, you should address this with him. He probably thinks he's doing what you've hired him to do. Open and honest communication is key to developing a successful relationship with a trainer or coach. You need to be able to tell him that although weight loss is one of your goals, you feel he's being too stringent with you and the way he approaches nutrition makes you feel guilty and uncomfortable.
Just curious, but have you lost weight in the seven weeks you've been working with him?