Nope! It is true that thinking about eating all the time is not normal. This is called an addiction to or dependence on food. When someone suffers from a screen addiction (TV, tablet, computer, phone, video game console…), it is because they can no longer do without it and devote all their time to it. Often, they get angry at anything that distracts them from the game, the show or the reels that are on their screen. Talk to the person, if you can, to understand what is going on and suggest they talk to an adult.