I wanted to put some spicy, crispy, crumbled coppa over a pasta dish. I put it in the microwave and it crisped up very well. It was however much spicier after cooking than before.
Why did it get spicier?
The microwave caused heat which released oils from the coppa's spice blend, including capsaicin.
My guess is water evaporated from the coppa and the flavors got more concentrated as a result. The same thing happens when you cook tomatoes, for example. They develop a stronger taste as a result of the water being evaporated during cooking.