G.B.
M.,
One way to create a "foyer" would be with a tall bookshelf.
You could even put two, back to back so that both sides, from the kitchen view or the front door view, are decorative. Put it about 3 ft from the entry (sideways) so it creates a little "square" area when you walk in.
You could hang stained glass sheets from chains and create a "wall" with them.
You could group a set of fake plants, one being very tall, like almost ceiling hieght if you have an 8 ft wall) another two maybe 6 ft another maybe 4 ft., just inside the entry to make the feeling of a barrier there. This is similar to the bookshelf idea.