Yes they are one of the easiest things to engineer. But if your like me and engineer specific ships and don't module swap.....it gets old after engineering the 20th HRP lol.HRPs are one of the wonderfully easy things to engineer in this game. You always want Heavy Duty deep plating bulkheads unless you have a major weight issue (and even if you do, it's usually still optimal), and heavy duty deep plating HRPs. There is only one exemption to that, and that is if you use Reactive Bulkheads, you might consider making the smallest HRP a thermal resist, however, I tend not to bother due to the low prevalence of lasers in pvp, while in pve, they tend to use lasers on shields and kinetic on hulls, so still the thermal is of little value. I used to do this (a single thermal resist), but I don't any more, the raw armor and extra kinetic resist is usually worth more overall (due to no diminishing returns on pure armor).
P.S. This is for all situations, across the board, not just CZs.