One of mine died like this after I had just bought it, I think it is simply too much light too soon (in combination with possibly lack of proper humidity) , it may recover though, it will just take time (at least a month looking at the picture but could be even three or not recover at all, unfortunately) I wouldn't worry about infestation
Apart from Heliamphora I also put other CPs in my highland terraria but it depends on the current amount of space, part of the year etc. Some, like Cephalotus for example, grow outdoors most part of the year. This time I'm adding couple pictures of temporary inhabitants... Okay, some Helis as well :) All are relatively young plants.