  Using a data-driven machine learning tool we report $T_{\text{eff}}$,
$\log{(g)}$, $v\sin{(i)}$, and elemental abundances for 15 elements (C, N, O,
Na, Mg, Al, Si, Ca, Ti, V, Cr, Mn, Fe, Ni, Y) for a sample of 25 exoplanet host
stars targeted by JWST's first year of observations. The chemical diversity of
these stars show that, while a number of their companion planets may have
formed in a disk with chemistry similar to Solar, some JWST targets likely
experienced different disk compositions. This sample is part of a larger
forthcoming catalog that will report homogeneous abundances of $\sim$4,500 FGK
stars derived from Keck/HIRES spectra.
