"Dragon Slayer"? (Patreon)

What was supposed to be a quest to vanquish a dragon, ended up being something else that the knight can't handle.

Turns out while going where this supposed "dragon lair" was, the knight ended up getting a curse of diminish, which made him shrink to almost extremely smaller size and the "dragon" was never really real at all to begin with, what the shrunken knight found there was just a lonely Lizardmen living his normal life.

Now the knight must get help from this huge being to get uncursed.