A private from a Chasseur a Pied Line regiment.
The yellow in the uniform relates to their light infantry role but the green epaulettes further distinguish them as more specifically rifle regiments, like the German Jagers who wore green. This was the accepted huntsman's colour in Europe. In full dress, his shako would be fitted with a falling green plume atop the pompom. The regimental button is worn at the centre of the cockade and the battalion number would be worn as a metal numeral on the band above the peak.
I'm open to suggestions here but I think his plain collar indicates he belongs to a centre company. If he was part of a flank company, his collar would bear a grenade and his coat bag ends would show a bugle.
The Chasseurs a Pied wore almost exactly the same uniform as their Imperial regiment counterparts and it remained unchanged during most of the Second Empire. They were the most popular and dashing units of the infantry.
The jacket is a Battle Gear toys ACW frock coat dyed to darker blue. The trousers are SST Zouave pants with added piping. Pack is SST with scratchbuilt additions. Shako, epaulettes, ammo box and cap pricker are all scratch built.
Again, all comments welcome. Particularly on the collar ornamentation. Sometimes the pictorial evidence doesn't match the written description!