One morning I went down to let the flock out before coffee. One of the pullets was off to the side acting funny. I walked over just in time to see her swallow a good sized garter snake, spaghetti-style like you described.
It was the first time I'd seen a chicken catch a snake, and she looked so happy. As I was thinking, "Way to go, supplementing your protein!" and "Welp, probably going to have to worm you birds soon," I suddenly realized there was a copperhead a foot away.
I was so terrified the pullet would go for that delicious danger noodle next, I froze up. Finally found my voice to tell her to back off (and she did!) and yell for DH, who swooped in to save us, like he always does. Not my finest moment.
These days I always drink coffee before heading to the coops.