Concrete block wall cracks

I inherited a 75 year old home with concrete block walls on three perimeter sides... in three places, the earth has settled and the walls have a full penetration zig-zag crack running top to bottom. Unfortunately I only have access to my side of the wall. My question is, can I use a two part, epoxy mix in a chalk gun to fill the voids and stabilize the walls? There’s a decorative cap on top so I can’t see if the interior voids are filled with concrete and rebar, although I suspect not...

Concrete block wall cracks