FIB -
Honey - gotta get out my 2 x 4 for this one.
You KNOW your wife is wacked out and not playing with a full deck. WHY would you let yourself get drawn into a pissing match over pancakes????

Let her make the damn pancakes - more cuddle time watching cartoons with your son for you! S does not need you to cook his pancakes to know you love him. W is feeling insecure and threatened by your excellent fathering and is trying to mark her territory. It will all be moot once you're separated.

I'll remind you of the mantra my husband always told me with regards to our kids: Choose your battles.

Honestly, it's your irritation and suppressed anger at her that's letting you get drawn into this BS. Be better than that. Be above it.

Ellie