I stopped putting the word "healthy" with gumbo like I stopped doing with chili and since I don't make it often, I go with rendering pancetta, because it's not smoked, for the oil in the roux after toasting the flour. I used bacon drippings but it had this weird aftertaste and I figured it was the smoke. And that crispy pancetta make a great topping for the gumbo.
Actually makes a great topping for everything. If you've got a baby hanging around the house, drop some on some Gerber's and watch them light up and go to scarfing.