Dunno who would use Sol's j.hs as a stand-alone jump in attack, but there's no reason he should be using that. J.s, even j.d are better options for him. The only reason a Sol would use j.hs is as a defensive air dash buffer. If you try to air-to-air counter it, chances are your attack will indeed be eaten by j.hs, and you'll end up eating a sidewinder combo.
Zone Sol with 5k and 2d. It's not very hard to bait his DPs either. Keep him grounded with good hs teleport/d teleport j.hs placement. Get your hits in and move back out.
Sorry, it's been a while, so I can't talk about the Sol vs Chipp matchup without resulting to vaguaries. The advice should still be sound, though.