Basically, Napoli will remain the favorite team to win because they are playing at home and also, this match will be the right moment for Napoli to overtake Atalanta. However, if you consider about a record of winning the Scudetto, that factor cannot be used as a benchmark at all to determine the winner in a match like this. However, if you consider the situation and conditions that are occurring at this moment, of course it will be a better consideration or assessment. After all, based on existing head to head records, the reality is that Napoli has a good winning result every time Napoli plays against Atalanta. Therefore, it is certainly not surprising that in this match Napoli is still the team projected to win because indeed, at least Napoli is still performing well even though Napoli have a new coach after the previous new coach was fired.
I agree that Napoli is the favorite team to win the match because Napoli looks to have a better stats. Moreover, it will be a home match for Napoli and 3 points is important if Napoli still wants to finish in the top 5 or top 4 at the end of the season. Sure, it is the good chance to overtake Atalanta in 6th place temporarily. Although Atalanta still has 1 unplayed match, but it will be easier to overtake Atalanta if Napoli can get 3 points in the upcoming match.
If we look at the current 5 matches, Napoli looks better. Napoli got 0 lose, they win 2 matches.