TexasCHLforum.com

So bottom line is there is no one answer. The answer lies in you, your personality, background, etc.
1. You could possibly legally shoot someone in the scenario presented by OP. Some would view that as correct answer because you are standing up for your property rights and it is worth the hassle of possibly going before grand jury, lawsuit, etc.
2. Others would call police and try to monitor from a safe distance. They would only present arms if faced by a direct challenge from the BG. They view CHL as only to be used to protect life. They also evaluate risk versus reward of the situation.
3. Others would possibly retreat back inside shopping center and then make the call.
Is any answer wrong. Absolutely not - that is why God created each of us a little bit different from the others.

There are many learned scholars on here who can correct my error but my basic layman understanding of CHL law is that it gives you the right to defend life - not police power.