Leicester are unbeaten in four matches and have conceded a goal in that time.
Watford have lost seven of their last 10 Premier League matches and haven't kept a clean sheet since November.
The Hornets edged Leicester in the reverse fixture on Boxing Day but may struggle to repeat that result on Saturday.
Stoke have now conceded 50 goals in the Premier League this season following a 3-0 loss to Manchester United and Paul Lambert needs an immediate response from his players to overcome Huddersfield. The Potters have won only one of their last eight league matches, losing six of those, to leave them mired in the bottom three.
Huddersfield were resoundly beaten 4-1 by West Ham at the weekend to extend their winless run to five league matches. The Terriers have lost seven of 11 away games this term and, for all of Stoke's troubles, are underdogs here.
This promises to be an open encounter, which could result in a draw.