No, that doesn't seem to be bad. Remember, it's only day twenty, and the chick doesn't always peck through the membrane everywhere. It was half see-through for Chick number one, and I missed chick Two's hatch-school :thun
Well, it should be normal, or else my eggs are weird!
Mine just pipped and hatched this morning and today. I think I migth have a third chick coming... both had the little white membrane, at one point the chick had pulled it towards itself and we could see little yellow clumps of wet fluff :3