  We show that electron correlations lead to a bad metallic state in
chalcogenides FeSe and FeTe despite the intermediate value of the Hubbard
repulsion $U$ and Hund's rule coupling $J$. The evolution of the quasi particle
weight $Z$ as a function of the interaction terms reveals a clear crossover at
$U \simeq$ 2.5 eV. In the weak coupling limit $Z$ decreases for all correlated
$d$ orbitals as a function of $U$ and beyond the crossover coupling they become
weakly dependent on $U$ while strongly depend on $J$. A marked orbital
dependence of the $Z$'s emerges even if in general the orbital-selective Mott
transition only occurs for relatively large values of $U$. This two-stage
reduction of the quasi particle coherence due to the combined effect of Hubbard
$U$ and the Hund's $J$, suggests that the iron-based superconductors can be
referred to as Hund's correlated metals.
