I think these chapters are a nice addition as it lets us see their pov but just make sure to not make it too long or boring as it may make the readers get bored with the chapters when they would have like it if you did not add them. It kinda needs a delicate balance.
I think its good that you are building story arcs for the side characters. However, it’s too long without Moby. Shorter side arcs or alternating with the MC arc would have been better.
I wonder if once the Aagz are taken care of, the "human queen" will then go back on her promise of peace and freedom in true demon fashion to harvest the 2000 regular goblins as points to prove her worth to her Savior, the future Demon Lord!