I've never really had a Chimichanga in my life, but this recipe seems to be a fast and healthier way to have them, since it's baked (not deep fried) and made with zero added oils.
Personal notes:
1. I used seitan instead of soy curls.
2. Go easy on the chili powder. I used less than half of it and it was for me quite enough.
3. Mine were ready in less than 20 minutes, more than that they seem to burn.
From
Brand New Vegan
Recipe:
http://www.brandnewvegan.com/recipes/baked-vegan-chimichangas