Minutes haven't come as frequent for the American star who joined the Blues this summer after Chelsea agreed a staggering £58 million for the 21-year-old in January with Borussia Dortmund.
Pulisic has found himself on the bench more often than not, whilst even not making the matchday squad against LOSC Lille in the Champions League in midweek..
But after coming on against Southampton on Sunday, he provided the assist for his teammate Michy Batshuayi at Chelsea, and back at Borussia Dortmund, which saw the Blues get their fourth of the afternoon in a deserved 4-1 victory on the south coast.
He is now on four assists for the season, and now leads the assists chart at the club so far this season.
The 21-year-old spoke after the game, and reflected on the lack of minutes under Lampard, and revealed he isn't worried about what is being said, he is just getting his head down and working hard: "You can’t completely ignore it. I don’t live under a rock. I hear things, I see things, but I do my best to block it out. I’m just working hard for myself. The outside opinions don’t matter as much to me as to what’s in the team, myself and the people who care about me.
"I’m just going to keep working and do my best and not worry about it," Pulisic said.
After joining for big money to a big club in England, the American isn't concerned with the high price-tag which is slapped onto him.
"This number [£58m] doesn’t mean anything to me. Obviously, I go out and try to give my best every time I’m on the pitch. I’m not sure what the price tag means to you, but I just have to keep trying to perform at my best for myself and for the team.
After leaving the US to head to Europe, Pulisic reflected on his time in Germany and England, and compared the two: "Culture-wise, it’s been easier than Germany [to settle in], to be honest. From the football side, I guess you could say that [it has been more difficult]."
Not playing has been at the forefront of the winger's mind, but he is insistent that he won't give up, and believes his chance to shine is just around the corner: "Obviously, I haven’t been getting as many minutes as I would like. I will just keep going, keep pushing. I know my time’s going to come.
"I’m not just going to throw a fit and give up ever, so if I’m on the bench it doesn’t mean the gaffer doesn’t think I’m a part of the team, I’ve just got to keep pushing and earn my spot.
"[The manager] likes players who work very hard and show a lot in training and I just have to continue to do that, do my best in training and try to learn my position."
Frank Lampard has brought freshness to Chelsea, a change of approach and Pulisic was asked to reveal what the expectations are for the Blues this season.
"It is a difficult question because the expectations are hard to say, coming in fresh. We knew there would be challenges and then you can’t always assess where everyone else is going to be and what might happen.
"I feel we are a few points short of where we should be in terms of performance - and that’s not bad luck, that’s just being self-critical.
"Obviously, Liverpool are out on their own at the minute, but at this early stage we are in a nice position. The minute you relax in this League, it can all change very quickly," Pulisic added on leaders Liverpool and the rest of the Premier League.
The Premier League now takes a break with the international break coming back into fruition which will see Christian Pulisic face Cuba and Canada with the United States.