https://books.google.com/ngrams/graph?
content=food+porn%2C+gastro+pub&year_start=180
0&year_end=2019&corpus=26&smoothing=3&direct_u
rl=t1%3B%2Cfood%20porn%3B%2Cc0%3B.t1%3B%2Cgast
ro%20pub%3B%2Cc0

(a google books English corpus ngrams search 
comparing "food porn" with the word "gastro 
pub", showing both started becoming popular 
around the same time, but that "food porn" in 
2019 was around 2.5x more common)

Welcome to JMdict, Nicolaus. 

"Food porn" is far from obscure. The Japanese 
word itself is slang and could be considered 
offensive for its casual　reference to terror. 
Although the (largely hypothetical) potential 
for offensiveness might be different, I think 
it's a good match in register. Finding the 
right translation is always a balancing act, 
especially for slang, but I'm not seeing at 
all any issues with having "lewdness" (which I 
frankly struggle to see in expression "food 
porn") in the first gloss. 

Also, we don't add usage notes on the English 
glosses, only on the Japanese itself. There 
could be advantages to adding such notes, but 
since something like that would affect a lot 
of entries, that discussion would be best 
suited for our Github: 
https://github.com/JMdictProject/JMdictIssues/

@@ -19,2 +19,2 @@
-<gloss>appetizing pictures of food (slang: food porn)</gloss>
-<gloss>terrorizing people by posting images of strong appetite inducing food</gloss>
+<gloss>food porn (i.e. appetizing pictures of food)</gloss>
+<gloss>terrorizing people by posting food porn</gloss>

The English slang would be "food porn" which something even most English speakers have never heard of.
Can we please keep the lewdness out of being the primary definition?
I realize this is going back and forth, so maybe moving the "food porn" part to the parentheses keeps this congruent yet more appropriate.

@@ -19,2 +19,2 @@
-<gloss>food porn (i.e. appetizing pictures of food)</gloss>
-<gloss>terrorizing people by posting food porn</gloss>
+<gloss>appetizing pictures of food (slang: food porn)</gloss>
+<gloss>terrorizing people by posting images of strong appetite inducing food</gloss>

Neither the Google nor Kyoto corpora have n-grams to lean on, but plenty of usage on Twitter: https://twitter.com/search?q="メシテロ"&f=live.

@@ -8,0 +9,4 @@
+</r_ele>
+<r_ele>
+<reb>メシテロ</reb>
+<re_nokanji/>

OK