This is a key moment in this show's use of tickling. They probably got a lot of views, and a lot of positive feedback from their last one with Kelly Ripa.
BUT, if people start now spamming them with creepiness (like the time someone sent a picture of a girl tied to a bed being tickled to Kelly at her show, which dried up the tickling references on that show pretty much overnight) it's going to turn them off, and this is going to stop happening.
It's ok to say "I loved that, that was so fun!"
It's NOT ok to say "That was really great, but next time you should TIE UP alyssa and tickle her on TV!" or "Can you ask her on a scale of 1-10 how ticklish her feet are???"
They are producing a cooking show, and if they start to feel like they're doing fetish fan-service, they're going to stop.