Zits from Python Pit (Monster Juice Series #6)

After defeating an evil mummy in Egypt, Chris and the others are mystically summoned to the heart of the Congo by a new evil. There they find a legendary serpent beast that has infected all the kids with nasty, blistery, snake-filled zits. Together with their monster friends, the kids have to uncover the secret of the Python Pit and defeat this new slithering threat before it’s too late.