As usual, regularly eating a second fried snack (6)
I believe the answer is:
samosa
'fried snack' is the definition.
'samosa' can be an answer for 'snack' (I've seen this before). I'm not sure about the 'fried' bit.
'as usual regularly eating a second' is the wordplay.
'regularly' means one should take alternating letters (regularly take one letter, leave next etc.).
'eating' means one lot of letters goes inside another.
'second' becomes 'mo' (both are short periods of time).
'as'+'usual'='asusual'
The alternating letters of 'asusual' are 'ssa'.
'a'+'mo'='amo'
'ssa' going around 'amo' is 'SAMOSA'.
Can you help me to learn more?
(Other definitions for samosa that I've seen before include "tasty snack" , "savoury pastry" , "Triangular fried pastry" , "Indian dish" , "food item" .)