"What on earth"? Nothing.

Not the whole time. Obviously she goes into labor right before the climactic battle, then fights it with the newborn infant in one arm. Maybe hands it to Galavant for a moment so they have to trade off who's wielding one- vs two-handed.

Her pregnancy is partly played for laughs, because no self-respecting comedy writer is going to skip jokes about cravings, mood swings, the infinite struggles of back pain...

But moreover, Izzy has a compelling character arc about her current and incipient struggle to maintain her sense of self as a (retired) warrior princess versus a mother. She literally can't fight as well while pregnant, and it's arguably irresponsible to throw herself into battle the same way - and that's going to be her whole future? The rest of her life, no longer a svelte young romantic lead but a doting mother or, at best, nagging wife?

Galavant is also having his own anxious pre-parenthood arc, mostly about "oh god I don't want to be a shitty absent father like my dad. he's my only role model! yeah, he turned out okay later, but not when he was raising me!"

These issues collide in Galavant trying really hard to care for Isabella, protect her, help her on and off horses, etc - partly because he's correcting to overprotective and treating her like spun glass (she accuses), but also because he, y'know, loves her and their unborn child, and wants them to be protected, comfortable, and loved…

They are both being dramatic about this all season. It's a driving source of conflict and development...

Valencia (Isabella's parents retired to a beachside cottage next door to her and Galavant, to be full-time grandparents)

The kingdom of those sister-princesses who were cruel to Madelena (mass peasant revolt -> Reign of Terror-esque bloodbath -> Richard & Bobby conquered it for everyone's own good really)

Hortensia (it's technically a Protectorate, or maybe a Regency, because of course they had an 11yo king and 0 army.)

Princess Jubilee's kingdom (sold it to Richard for three crates of beer and a ticket to fantasy!Paris, where she's now kicking ass and partying bisexually)

2 other realms that no one really cares about, they're just, like, peasants and fields, and maybe a castle or two.

HOWEVER in the week that Richard was dead, Valencia, Hortensia, and Jubilee's kingdom all rebelled! Bobby, with Tad Cooper and maybe the obligatory heir & spare she and Richard probably had, are in the former-Reign of Terror kingdom, cut off from the rest of the party!

So, as they travel the kingdoms to get the McGuffin pieces, they're also re-persuading people to accept Richard's rule...while Bobby trails like an episode behind, picking up the pieces of whatever that leaves behind, and dealing with all hte practicalities of rule. She's narratively cast as Competent Wife to Hapless Husband, but she keeps insisting that she's so overworked in this because usually Richard does half the work. To Richard's credit, he is genuinely effective - with other characters' help - at convincing people to re-join his mega-kingdom.

The reason Hortensia rebelled is that little Prince Harry has actually grown into a totally fit & handsome young man who has roused the people to retake their own kingdom. We're going to have to let them be, ultimately, only re-joining in alliance. Jubilee's kingdom has rebelled because she came home and was like was like, "Yo, still mine." Richard gets thrown out of her kingdom; Isabella stays behind and she and Bobby convince Jubilee to join the alliance, too (while Isabella gets help going with her warrior princess/motherhood issue.)

The culmination of all of this of course, is Richard returning at last to the one holdout: his birth kingdom. He will have to participate in a democratic election and be CHOSEN as king...with limited executive power even in emergencies like the obviously ongoing one right now, with all the zombies and monsters. What sort of idiots would give unlimited emergency power to a sole executive on the grounds of said executive declaring an undefined emergency?

Btw Bobby has a Tad Cooper on a leash the whole time, which goes off screen so the mighty dragon is never seen. Sometimes there's a burst of fire from that direction. When she FINALLY catches up with everyone for the season finale, Tad Cooper has a dramatic entrance where he scours a battlefield of monsters with a blast of fire and we finally see him, a grand shot from below, he's haloed by the sun...

He's an iguana on a tall rock, about 5ft up. Cut to everyone standing around and looking down at the iguana. Galavant says, "That's...a full-grown dragon?"

"Yes!" Richard says indignantly. "Yes," Bobby says tiredly.

BUT