Wait after taking it out of the oven?
This is the problem with the thermodynamic properties of chicken pot pies...they are either insanely hot for the first ten minutes after you take them out (thus scorching your tongue), or when you let them cool, they cool down too fast and you're stuck eating lukewarm mush.
I just got a bunch of different flavors of frozen chicken pot pies to try out (chicken, chicken-Parmesan, chicken & bacon)...it occurred to me that I could put my sous vide BSCB to good use inside of a pot pie, along with some steamed veggies, because sometimes the chicken in the frozen off-the-shelf pies gets way too chewy (I've had two huge cartilagey chunks already in the one I'm having for lunch), so I'm researching flavors & ingredients to try out some homemade ones that I can freeze. I have this awesome mini-pie maker:
http://www.amazon.com/Sunbeam-FPSBPMM980-4-Piece-Pie-Maker/dp/B007K98IEE/
The pies are VERY small (palm-sized) and doesn't cook the contents inside, just the bready exterior (so you have to pre-cook any meats), but it's really convenient for making dinner or dessert pies...meat pies, chicken pot pie, chocolate pie, apple pie, etc. I've also been experimenting with making fruit compotes (for pie filling) in my Instant Pot (electric pressure cooker), which really speeds up the process. A couple oddball ones I've been working on are a taco pie, inspired by this meat pie video:
https://www.youtube.com/watch?v=rPdptjTLUI8
And also a chili pie that uses a cornbread crust, so you can have a heat & eat meal. Picked up some Jiffy mix for trying that one out:
http://www.jiffymix.com/recipe.php/Jiffy+Corn+Muffin+Mix/290-"JIFFY"+Corn+Pie+Crust
The pie maker makes 4 pies at a time. Spoon for scale: (screenshot from the video above, although that still makes them look larger than they are IRL)