I will bet over 2.5 on the match. I know crystal palace will get their win but not without Leicester city struggling to defend and making attempts as well. Getting a draw as well can be possible because Leicester are playing at home but it's risky as you said. The only player that might be worrisome in crystal palace is Wilfred Zaha.
I don't understand why you're bet over 2.5 while the odds is @1.92 while you can actually bet Crystal Palace to win by Moneyline with higher odds for @3.15? it doesn't make sense. Crystal Palace is an underdog here and they're not a club which favor to score a lot goals, I think bet over 2.5 with such small odds isn't worth it. I think you should bet Crystal Palace on draw no bet event, the odds is quite high too for @2.21.
I quite agree with you on that because a lot would be riding on today's game as Crystal will be looking to secure three points and I won't be surprised too if they might keep a clean sheet.
Most of Leicester players like Iheanacho and Jamie Vardy and Daka would be looking to try to salvage their already relegated situation, but I don't think the likes of Zaha would allow for any opportunities to come Leicester way .