If it is your first turn going second and you attack with Medicham V's "Yoga Loop" attack, are you allowed to use Squawkabilly ex's "Squawk and Seize" Ability during that additional turn?
No, you cannot. The second turn is a new turn and no longer your first turn.
Source: TPCi Rules Team (2023-12-14)

Relevant cards

Note: All applicable cards may not be listed below.
SV2_169
SV2_169
SWSH7_83
SWSH7_83