The Scalqa leader had seemed relatively cooperative until now. He didn't show stark and one-sided enmity even during the short battle. However, the glare pointed at Khan conveyed very different feelings.
The surprise waned in the following seconds, leaving only resolve. The Scalqa leader seemed ready to throw himself at Khan, uncaring of the possible consequences or outcome. A deep sense of duty shone in his big eyes, overcoming any trace of reason.
Of course, that reaction only intensified Khan's curiosity. The Scalqa leader seemed to have acknowledged Khan's power but was still willing to fight if the situation required it. The alien probably valued the rectangular tent's contents more than his life, which spoke for its importance.