I think you may be a bit low on fat, especially on your chicken day. Salmon on ribeye would have some fat to go with it.
Have you tried fitday? It would be interesting to see what your percentages are. Fitday will find out for you where your calories are coming from.
Also your veggies should be two cups salad veggies, one cup other veggies. For some people keeping up their veggie content is important. You may be one of them.
I think your body is adjusting from 'starvation" to Atkins - so you will likely see more losses as the body it figuring out what is going on
It is probably a bit confused right now. And when it gets confused it hangs on to stuff.
Drink PLENTY of water. Take your supplements too.
I think you are doing pretty good. Keep going.
Started a bit of exercise yet?