In the spring I collect all of the turkey eggs whether from first time layers or older hens and incubate all of them. It is normal for the first egg laid to not be fertile but any following eggs usually are.
It is not normal for a Royal Palm hen to start laying in the fall in the northern hemisphere. If the turkeys are being supplied with supplemental light it can throw off their normal laying times. If the hens are being supplied with extra light but the toms aren't, it is highly unlikely that the eggs would be fertile as the toms also need a certain amount of daylight to be capable of fertilizing the eggs.
Good luck.
You can incubate the eggs. The worst that will happen is that they won't hatch.
Personally I do not hatch anything this time of the year due to the difficulties of keeping the little ones warm enough until they are acclimated to the ambient temperature.