I have made something similar to this a couple of different ways, with bbq'd chicken and also with seitan.
I used the recipe as a starting point and modified to my own likes. I used chicken, chipotle in adobo, black beans & pumpkin layered the bottom and I put torn swiss into the cornbread mix before popping it into the oven. It turned out absolutely wonderful. The chipotle ended up bringing more heat than I personally enjoy so I would put a little less next time. I put about two to three tablespoon and I thought I was conservative at that point, oh well?