Giroud scored his first goal in nearly 800 minutes of competitive football on Thursday to help Maurizio Sarri's side secure a 1-0 win over BATE Borisov in the Europa League, a result which rubber-stamped the Blues' progression to the knockout stages.
Freezing fog in Borisov contributed to an underwhelming display.
There was further positivity as Eden Hazard, having played 30 minutes at the weekend, completed an hour of the game, while 18-year-old Callum Hudson-Odoi came on for the closing stages. The best thing about this evening was the result.
I'm not nervous, I'm excited to play against my former club and teammates - I understand how some of their pay, so that could be an advantage for me.
Barkley did not have the best of beginnings in his west London career following his £15 million move from Everton, making just four appearances, half of them from the bench, under Antonio Conte. We defended very well and they defended cohesively so it was hard to find solutions at times and stop them on the break.
That prompted a strong response from Bate, but Nikolai Signevich struck the left post and Aleksey Rios blazed over from close range as the Blues held on to win.
Hazard had been due to be off by then and Sarri was gesticulating wildly in his technical area, apparently towards the Belgian.
Brazilian-born Italian defender Emerson Palmieri gave the assist that saw the Frenchman put the Premier League side ahead in the fixture.
"I was approaching 25 and I felt looking back I could have improved a lot more [at Everton]".
"I guess when I am on the floor I can win free-kicks, so every free-kick is a chance to score more goals". I want to see our team to be ourselves.
"I don't think it will be the best", he told Sky Sports when asked about what reception he would get.
"At the end of the day we are happy with the three points because we want to finish first but we played a very good team".