The Argentine forward, who was signed for a club record transfer fee this summer, has continued his impressive form from last season by opening his Premier League account with three goals in four games.
Only Chelsea’s Diego Costa - with a remarkable tally of seven in four - has netted more times than the former Brighton man, who scored 23 goals in 50 games last season as the Seagulls reached the play-off semi-finals - including two in a 4-1 victory over eventual champions Leicester.
Despite attempting to sign both Troy Deeney and David McGoldrick during the summer, £8 million man Ulloa arrived with the backing of a large number of the squad, with defenders Wes Morgan and Marcin Wasilewski claiming that he was the hardest forward they played against in the Championship.
And it looks as if Premier League defences have yet to accustom themselves to the 28-year old’s style of play, with just Chelsea preventing the large centre forward from scoring.
Manchester United await this weekend, and Ulloa’s strike partner David Nugent - who has yet to open his Premier League account - is confident that not even their Galactico’s can stop Ulloa’s rich vein of form.
Speaking to the Leicester Mercury, the once-capped England international said: “The big man is on fire.
“He has come in as the big-money signing but he is producing the goals up there on his own. I am trying to get up there to support him but he is getting the goals and he deserves it.
“The gaffer has done well to bring him in. We played against him in the Championship last season and he scored against us.
“He holds the ball up well and gets good flick-ons, and he always seems to be in the right place at the right time, as you have seen in the last four games.”
The Red Devils have been less-than convincing in their defensive displays this season, and despite beating QPR 4-0 last weekend, questions are still being asked about their attacking-focused recruitment policy.
If Ulloa wants to add to his account, with a goal against the Premier League giants, facing United will come at no better time than the present.