Sure you can boost a distortion pedal. Treat the dist pedal much like an amp. I find that tube screamer-type boosts usually work really well (especially as a solo boost, as they add mids to help you cut through).
To be honest I'd advise getting a pedal with at least a little bit of EQ control. The MI Audio Blue Boy Deluxe is a great booster pedal, that is very tweakable too. I've used it to good effect boosting loads of different amps and distortion pedals .... just one that I'd recommend.
My BYOC tube screamer clone was awesome for that too.