The Chick is a limited common pet in Adopt Me! that could have been obtained for free during the Easter 2020 Egg Update. When a player hatches the Easter 2020 Egg, they got a badge and an exclusive item for their avatar.
This pet is permanently not trade-able according to the Adopt Me! Team, therefore a Neon and Mega Neon version cannot be created, unless by administrators. Although some hackers and administrators have Neon Chicks, it is impossible for a normal player to obtain one. Since the egg was temporary, if players did not hatch the Chick while the egg was out, they did not obtain the Chick.