I would call it "strange" or "off-putting" as suggested by Brian Donnovan.
disgusting (adj) "so unpleasant to see, smell, taste, consider, etc., that you feel slightly sick" MW
off-putting (adj) not pleasing or likable : causing you to feel dislike of someone or something. MW
Some cooks have very good ideas on how to make a dish look most appetizing. Others, however skilled, do exactly the opposite. More often than not, their goal is to shock those who see their "masterpiece". The pictures below illustrate that.
figure 1. brilliant and mouthwatering sweets
figure 2. deleted on request. Considered offensive and shocking by some.
To a Western World culture, the food in your picture certainly looks "strange" to say the least. But I wouldn't be surprised if it were appreciated in some regions. Then again, my second picture will certainly be considered disgusting, unseemly and offensive by most people.