m0useanswered grow question 7 months ago That could very well be it. I don't know of anything that has that dramatic of a symptom with the contrast from green to yellow and no other signs of stress.
Best to no spray the plant sunless you treating a pest and even then, never in full sun always shade/overcast. the little water beads on its leaves turn into mini magnifying glasses and burn em. and If the spray was to strong the salts in it also burn.
Good Luck!