Selecting nuts for successful home oven-roasting
For raw, harder, and bulkier nuts like Almonds try a slightly lower temperature, say 180°C (350°F), and for a longer time

For re-roasting previously roasted nuts use a microwave oven (I know...). Same recipe, but just a few minutes on high. Watch them the first few times until you find the magic time limit before they start to burn

Commercially more and more people are using continuous microwave roasting machines, so using the microwave at home is so bad...

Personally, I like nuts aged in their shells before roasting