J.B.
T. yes he's being less than stellar but probably resents that you took on an additional obligation.
I'm going to give you some advice you didn't ask for...take it for what it's worth. As a veteran PTA mom, learn early to not say yes to everything. PTA will suck the life out of you if you let. It takes everything you have to give and unapologetically comes back for more. What you have to learn, especially in the younger grades, is that if you can't do something, plenty of other people will help out. As the kids get older participation drops off and then they really do "need" you but now, everyone wants to pitch in.
I enjoy baking and when given the opportunity, whip up ridiculously labor-intensive desserts at the mere suggestion of bringing dessert. DO NOT be like me. If they really need every board member to bring a dessert, pick up a package of brownie bites at the grocery store bakery this weekend. They won't melt in the car. Here's the thing - NO ONE EATS DESSERT at PTA meetings (especially one at 5:30 in the afternoon). There have been lovely snacks at many, many meetings I've been to over the years and for whatever reason, moms don't eat dessert in front of other moms so they just sit there and then get thrown out. This is not the time or place to put any effort in. Either say that you can't bring anything this time but will help another time or buy something.