List of Star Trek Characters turned into lizards:

ussjellyfish:

quasi-normalcy:

• Yeoman Lawton (turned into an iguana) in “Charlie X” (TOS)
• Geordi La Forge (turned into a Tarchannen-III alien) in “Identity Crisis” (TNG)
• Spot (turned into an iguana) in “Genesis”  (TNG)
• Major Kira (turned into a Cardassian) in “Second Skin” (DS9)
• Tom Paris and Kathryn Janeway (turned into hyper-evolved space lizards with fu manchu moustaches) in “Threshold” (VOY)
• Jonathan Archer, Hoshi Sato, and Malcolm Reed (turned into
  Loque’eque) in “Extinction” (ENT)

Anyways, no pressure, Discovery. Ball’s in your court, but no pressire.

Deanna Troi also turned into an amphibious creature in Genesis.