Don't hang your pendant light too high in a dining room. Mock up a table before you hang it - even if you just bring a fold-up table and chair - place them in the correct position and sit in place at the table. You want the light to be as low as possible without it obstructing your view.
A good guide is to have the bottom of the pendant no lower than eye level. But if it's a large drum shade, a little bit higher is best as it can be quite obstructing.