If nothing else, I hope getting in the process will help alleviate some apprehension.
You likely will find some questions about the gap, but realistically - life happens. Most people understand this, at least the places where you want to work.
This approach is on my mind because of similar thinking patterns. My current employer is so dysfunctional that I've regressed skill-wise, but oddly found comfort.
I know how to fix our problems, but my ability to troubleshoot has diminished incredibly. Now I'm terrified of trying to survive 'in the cold', so to speak.
Anyway, the thing to do here is be brave - the good thing is, there's not a lot at risk besides time/effort.