Portfolio reviews often encourage designers to overcomplicate their work.
Not every piece needs a set of personas, a whiteboard full of stickies, and hand drawn wireframes.
If you're having to wrap a complex set of processes around a project that only took a couple of iterations to (successfully) pull off, maybe you're presenting it with the wrong context.
It's just as powerful to show off quick and dirty tests that drove meaningful impact as it is to present a full, quarters-long design process.
Obviously, try to fit in both. The strongest portfolio reviews I've seen juxtapose a couple of highly complex, fully cross functional initiatives with rapid tests that take very little design lift.
Having a nose for quick iteration is a differentiator in this market. And knowing when to not over-design can be the skill that sets you apart.
Framing is everything. If you can convince a team that you know both when to redesign the entire product and when to do as little as possible to solve a problem, you're set.
At the end of the day, a company is interviewing you to understand how you really work. If your actual process was successful in your last role, don't be shy to show it off.