I am making the same turkey this year for Thanksgiving that I made last year since 10 of us ate an entire 20lb turkey in the course of a day - it was the most delightful turkey I've ever had! That said, the recipe calls for hazelnuts mixed into the butter mix that is spread under and on the skin, however this year someone coming is allergic to hazelnuts but no other nuts.
I am afraid to do a straight substitution because I do not know if other nuts have a different rate at which they cook and burned nuts all over a turkey would not be nearly as delightful.
In case you are interested in flavors, the recipe calls for:
Sherry wine vinegar
I was thinking pecans?