You might also bear in mind that we're talking about a really diminutive pistol, with a really light slide (mass) that has a short slide run (travel), and an extractor that's a "drop in" part.
Also, the pressure of another round in the top of the magazine, or the lack thereof (empty magazine), when the fired case is in the process of being ejected is probably exerting more influence than you might suspect when it comes to how the stubby little ejector nub engages with the empty case to kick it clear.
Then, factor in the difference in "power" (slide velocity) and shooter grip stability (does the narrow little grip shift in your 2-fingered grip, at all?).
I might casually wonder why Ruger engineers changed their ejector design compared to how it appears in the Kel-Tec P3AT, but considering the reports of owners of both brands of the itty bitty .380's over time, it seems Ruger did a good job in their assessment of the ejector's design and size requirements.
In other words, it's probably going to remain more of a shooter and/or ammunition influence on how the little gun ejects empties.
If you actually suspect a real problem with your LCP, why not simply call Ruger and ask for it to be examined? Might cost you some money for shipping, though.
If they end up telling you that it operates and functions within normal tolerances, in the expected manner, according to their specifications, then maybe you might consider that perhaps you might have some unrealistic expectations for the little gun? It's NOT a 1911.
Granted, Glock decided to revise their ejectors for their 9, .40 & .357 guns after the Gen4's had been in-service for a little while. (I had to get some of the 9 & .40 ejectors, as an armorer, to resolve a few extraction/ejection issues), but this whole "tuning of ejectors" is something that was apparently created by some 1911's aficionados (I'm one, remember), but even then it's something probably best left to folks who have knowledge, experience and skill in making such subtle modifications.
In other words, if it's not actually broken, don't try to "fix it" until it's
really broken.
FWIW, I occasionally keep an eye out for a factory LCP armorer class being offered close enough to me to make it attractive (seems to be offered combined with the LCR or LC9S, in their list of field schools), but nothing's come up, yet. Then again, I realize that not ALL field schools which end up being hosted may be listed in the normal factory listings. Things get added for various reasons. Probably a short class. The S&W M&P Bodyguard .380 and M&P Shield armorer classes are only 4hr classes, last I asked (haven't had a chance to attend it, either), if you're a currently certified M&P Pistol armorer.
Might be interesting to see what Ruger teaches in the LCP armorer class.