One idea could be a crossover where Naruto is transported to the world of Queen Chrysalis. He might initially be seen as a threat but then tries to find a way to coexist or help the creatures in that world. Maybe he uses his ninja skills to protect them from other threats.
A very popular one is 'Chrysalis Unveiled'. In this fanfic, the author peels back the layers of Queen Chrysalis, revealing her motives and backstory in a detailed and creative way. It's a long read but definitely worth it for fans who want to understand her character more deeply.
One possible theme could be the exploration of new relationships. For example, how the situation of the queen being pregnant might change her interactions with other characters. Maybe it leads to unexpected alliances or rivalries.
Naruto could use his talk - no - jutsu on Queen Chrysalis. He's known for convincing his enemies to change their ways. He might try to make her see the error of her ways if she's being evil in the fanfiction.
Another option is that it could be a character from a different species entirely. This could create a whole new set of plotlines and conflicts, such as how the two different species will interact because of the pregnancy and what it means for their respective cultures.
One common theme could be power dynamics. Queen Chrysalis is a powerful character, and in lemon fanfic, this power might be explored in relation to romantic or sexual situations. Another theme could be transformation, as she is a character associated with change and metamorphosis.
You can find Queen Chrysalis fanfics on FanFiction.net. It has a large collection of fan - made stories about various characters, including Queen Chrysalis.
One possible storyline could be about the challenges she faces during her pregnancy. For example, how she deals with the physical changes and the reactions of those around her in her fictional world.
Alex in this fanfic could be a really unique character. Maybe Alex is a fan of both Equestria Girl and Worm, and through some magical or scientific accident, gets transported into a world that combines the two. It would be a wild adventure for Alex to navigate the different rules and cultures of both universes.
I'm not sure there's a specific, pre - existing fanfic about Alex and an Equestria Girl in the Worm universe. It could be a very unique crossover idea. Maybe someone would write it as a story where the magical elements of Equestria meet the superpowered and often gritty world of Worm. They could have all sorts of adventures and face different challenges that combine the characteristics of both universes.