Neither of these is 'the' chair, but they both have elements of the chair Kasler used.
Sarah Richardson Designs has two beautiful chairs that might fit the bill:
Baker's Milling Road collection has a club chair with a similar look and feel, but this is not the same as the chair in the Kasler room.
The Baker Regency chair has a similar look and feel, but the proportions are different.
Councill makes some great upholstered pieces, including this one:
Kasler was recently featured in an article about chaise lounges, and many of her picks were at Jerry Pair. Jerry Pair carries Madeline Stewart furnishings, including the Hudson chair pictured below. It is not the same chair, but has the unique curved back of the citrus colored chair.
Although none of these are the exact chair that Kasler used (and she could have had it custom designed), many of them have similar design elements. Do any of you recognize the chair in the original Kasler living room? Is there one that you like over the others?