Suggestion about Almond roasting on salt

Hi, I am trying to roast almond on a pan on salt (no oil added) and found to be cracking at high temperature (above 140oC) though texture found to be good after 20min roasting. If maintain 120oC, it takes an hour to roast though no sign of cracking. Appreciate if anyone guide / suggest me about optimum roasting condition.
Thx, Shameem

I find oven roasting of almonds more convenient than pan roasting; its roast more evenly too…It does not cracks but remains smooth.Why not give it a try .?