Hey, yeah it will. Lighter veg takes up more space, So do something like cabbage. Or salad leaves and it will take up loads of space. You could have a side salad on the side.
Drink loads of water as well so you are not tempted to blow it. You could just admit you are trying to loose wright for what ever reason, your health say. And that is why you have a loads of greens and a little chicken. Also put herbs and seasoning on it so it looks really tasty

Most woman will understand how hard a diet can be.
It wont be easy, but just think of it as a good challenge, like a game, you have to complete the level Sunday dinner. You can do this

Think of how proud you can be if you manage it.
If you don't fine, its one day. It will take you out of ketosis, so as little as you can get away with, but you know you can carry on Monday. You could use other excuses as well, that you picked at food while you were cooking as an exuse. Things like that.
Good luck
