they really are... that said, a lot of 'good' tasting food for others are stuff that i dont really like... its a matter of preference..
another thing, its from a trope where japanese children hate bell peppers (the western counterpart being broccoli), so in a way it mixed it up where the cute mom (dad) hated the bell peppers so they force it on their daughter (son) instead, which is a way to spin the trope around (just like the unsuspecting spectators not knowing what's under those skirts)..