Looking for origin of sentence "Yep, it's a XY, all right!"

Just saw an episode title (Legacies, https://www.imdb.com/title/tt14178112/?ref_=tt_eps_cu_n) called "Yup, It's a Leprechaun, All Right".

This reminded me of an old game I used to play, where you click on a cow and it says "Yep, it's a cow, all right".

This kind of sentence seems to be used prety often, so I was wondering if it is maybe a reference to some famous quote I don't know that native speakers maybe all know?

so I was wondering if it is maybe a reference to some famous quote

It is a perfectly ordinary collocation. Your question is rather like asking for the origin of "It's a cow, isn't it?' originated.

OED:

A. all right: adv.

1. Used as an intensifier at the end of a sentence or clause: certainly, indeed.

a1413 (▸c1385) G. Chaucer Troilus & Criseyde (Pierpont Morgan) (1881) i. l. 99 Criseyde was þis lady name al right.

And I am sure that Chaucer was not the first to use it.