This is a bug in Northern Tales of the Sword Coast, creature ntkrotan.cre has a nonsensical level/HD assignment (0/30/1). Since the creature is not multi-classed, the second- and third level do nothing and the creature is effectively a level 0 fighter. Most likely this messes up SCS's proficiency assignments.
Both SCS and MiH contain code that remove the nonsensical secondary level 30 many BG1 creatures have because otherwise they end up with way too much HP. Based on its stats alone, I'd say this creature should have at least 15 HD.
Based on Angel's comment here: https://www.gibberlings3.net/forums/topic/37083-issues-with-and-questions-about-my-bgt-install/?do=findComment&comment=329753