Paul McCallum had a goal ruled out for offside in the first half, but Kashket pounced five minutes into the second period to net his 11th goal of the campaign. The O’s made one change from the side which won 1-0 at home to Accrington Stanley last weekend with Paul McCallum coming in for Sandro Semedo who dropped to the bench.
There was also a late change on the bench for the O’s with Michael Collins dropping out through injury, and he was replaced by Aron Pollock.
It was an encouraging start from Andy Edwards’ side with Paul McCallum’s long throw causing havoc in the box, only for Wycombe to eventually clear their lines before Gavin Massey whipped in a dangerous ball which the hosts headed behind for a corner.
Former O Scott Kashket had two chances for the Adams Park outfit in a matter of minutes as he first flashed an effort well wide, then drilled an effort from outside the box just wide.
After that the chances evaporated for both sides as it became a battle of the midfields at the midway point of the half.
That was until a chance presented itself for Jay Simpson following McCallum’s knock down. The striker took one touch before firing left footed across goal and just wide of the post with Jamal Blackman at full stretch.
Aaron Pierre then went up the other end and managed to beat the O’s defence to Joe Jacobson’s teasing delivery, however, his effort was comfortable for goalkeeper Alex Cisak to hold low down.
With four minutes remaining in the half the O’s thought they had broken the deadlock when a lovely crossfield ball from Jordan Bowery found Simpson.
Simpson and Massey then produced some nice play on the edge of the box before Simpson drilled a cross through to Paul McCallum who fired home, however, the flag had gone up for offside – much to the annoyance of the goalscorer.
There was an unusual half time substitution with fourth official Alan Young replacing Rob Lewis as referee.
It was the hosts who started the second half brightly and Kashket saw a shot well saved by Cisak although the linesman’s flag was once more up for offside.
However it didn’t take much longer for Kashket to net against his former side when Paris Cowan-Hall’s initial effort was saved and the rebound fell to the striker and his shot across goal beat Cisak.
Callum Kennedy’s game ended on the hour mark when he made a clearance and fell awkwardly, and he left the Adams Park pitch on a stretcher. A reshuffled back line saw Teddy Mezague coming on at centre back, with Judd moving to left back and Hunt to right back.
The O’s won corners in quick succession, but whatever they tried they were unable to force Jamal Blackman into a save as the game entered the final 10 minutes.
Edwards’ last throw of the dice was to bring on first year scholar Sam Dalby for skipper Robbie Weir in a bid to force a late equaliser.
Six minutes of stoppage time gave Orient a glimmer of hope but that came and went without any late chances as the O’s lost on the road for only the third time this season.
WYCOMBE WANDERERS: Blackman, Harriman, Jacobson, Stewart, Pierre, Gape, O’Nien, Bloomfield (c), Kashket (Wood 90), Thompson, Cowan-Hall (Weston 90+2)
SUBS: Richardson, Jombati, Bean, Rowe, De Havilland
GOALS: Kashket (50)
BOOKED: Cowan-Hall (82)
LEYTON ORIENT: Cisak, Kennedy (Mezague 62), Parkes, Hunt, Judd, Bowery (Semedo 73), Weir (c) (Dalby 82), Atangana, Massey, McCallum, Simpson
SUBS: Sargeant, Pollock, Nnomo, Erichot
BOOKED: Hunt (76), McCallum (76)
REFEREE: Rob Lewis (Alan Young HT)
ATTENDANCE: 4,517 (458 Leyton Orient supporters)