Have a google for 'flax seed cracker' recipes. They are usually low carb, very easy and delicious.
Regarding the protein, I think that yes, you can have too much. Although it depends a great deal on the person.
LCHF isn't a high protein diet.
It is a normal protein, low carb, high fat way of eating. So if you think you may be eating too much protein, then reduce the meat portions and replace them with more veg and fat. That way you still feel satisfied, bowel health is improved, and it is easier to maintain ketosis (if ketosis is the aim).
My experience is that I have actually reduced the protein on LCHF ketogenic eating, and feel better for it.