As it says over on the source page:
 
It was near evening and at the edge of the Everfree Forest the shadows were already deep. Under gnarled, ancient oak two individuals were having a discussion.
 
Queen Chrysalis listened to the white rabbit that rested in her left hand. Angel Bunny waved his front legs and made a series of squeaking sounds.
 
“Yes my minion. You were correct that Shining Armor would find me irresistible in this outfit. He has become much more controllable since I started wear this.”
 
The Angel made a series of gestures including pointing at itself. Chrysalis rolled her eyes and sighed.
 
“Look you were aware that if a changelings spend too much time in another form they can sometimes find themselves stuck and unable to change back. At the moment I can’t help you and I need you to continue your observations.”
 
Angel ears drooped and his eyes began to water. With quivering lip he looked at his queen and whimpered. The Queen of the Changeling scowled at him.
 
“Oh please! The horror and agony you must be enduring being carried, cuddled, brushed, and snuggled must be unbearable. Just continue your mission until further notice. Now you should get back before she starts worrying or you run afoul of some nighttime creature and become its dinner!”
 
With that Changeling Queen set the bunny on the ground and watched him bouncing off towards Fluttershy’s cottage. After a few seconds she transformed into Princess Cadence and then teleported away.
 
This is actually a Patreon reward for… who wanted Chrysalis in a bunny suit, but as I started working out the composition this little story popped into my head, so I borrowed some early works to help create the narrative. Besides it does explain why Angel Bunny is such a jerk when you think about it.

In case anyone is curious, Chrysalis here is talking to Angel Bunny, who in this setting is a Changeling that got ‘stuck’ in bunny form.

Awesome~

Oh my! <3

Why does it seem like that bunny is about to get eaten…

I like it.