Can I grill/roast pork chops if they are still slightly frozen?

[purplefish]

That's it really

Do you have a microwave? Pop them in there on defrost (or v. low) for a few minutes until they are defrosted. Best to be careful with pork.
If not and if they are only slightly frozen, waggle them - ie hold them in 2 hands and twist and turn them gently. Movement speeds up defrosting.

or wrap them up tightly in a food bag without holes in and leave to sit in some water til they defrost