Is nautilus a good jungler?

he was originally a jungler before he became a support

his ms is slow , he has slow 1st clears. cant duel anything that invades him

if you wanted to do it 9 as marks 9 armor seals 9 mr glyphs or 9 cd glyphs 3 ms quints

I have done a fair bit of it in the past.

The main strength is that the CC heavy nature makes for really mean ganks.

The main downside is that as a jungle unless you get really fed off those ganks you're probably not going to be super tanky and as a tank CC machine you're limited as to how hard you can carry, because you tend to** fall off hard**.

You probably won't fail for doing it, but on the flip side it'll be a bit tougher then some choices. For tanky jungles there's a slew of top choices (as tanks makeup most of the best choices right now):

Cho, Sej, Warwick, Mundo, Rammus, nunu. All amongst the highest winrates and strongest champions in the game and all solid junglers.

Yeah he's quite fun to jungle and doesn't have any problem with chickens.