In a small bowl, drain the juice of the tomatoes and set aside. Put the drained tomatoes in a medium bowl and mash up until pulpy and no big bits remain.
Drain canned green chiles and add to the tomato bowl. Set aside
Slice up the pork and lightly dredge in flour.
Heat up skillet to medium heat, add oil, and fry the pork in batches to keep browning even, setting aside on a plate as you finish.
When done, add a little more oil (if needed) and brown the minced garlic for a few minutes.
Add the tomato and chile mix.
Add the pork slices.
Add the extra tomato juice that you reserved as needed. (I used all of mine.)
Add chopped Hatch chiles on top.
Add salt, pepper, and onion powder to taste.
Mix together over medium heat for about 30 minutes, or longer to let the flavors meld. If the chile con carne reduces, add a little chicken broth.
Serve immediately.