Does anyone know who this calligrapher is? What's his name?

This is the seal of Shandong calligrapher Qi Deyu.

The leisure article is "seeking Tao and promoting goodness"

The seal is "Qi Deyu", read from right to left and from top to bottom.

Qi Deyu is the director of publicity and education department of Shandong Prison Administration. The seal on the right is not Zhai, but Qi. Just look at Qi Baishi's seal.