We don't see an obvious cause for leaf wrinkling, though the plant doesn't quite look like a Mountain-laurel, though it's hard to ID. Does it retain any leaves in winter? (This plant looks like it has entirely new growth and no old foliage from last year.) Does it flower at all? Mountain-laurel tends to be budded right about now, and blooms often open in late spring or early summer.

Sometimes airborne or water-moved drift of an herbicide can cause leaf symptoms on exposed plants, but if nothing was applied nearby (or in a neighbor's yard that may have evaporated and moved over on a breeze), then that is less likely. Aphids can suck plant sap, usually huddled underneath foliage, and can cause leaf distortion as a result. While potentially an eyesore, it's not serious damage, and plenty of other organisms eat aphids, so no control of them is necessary.

For now, the plant looks fine in terms of overall health, so no intervention is needed. If new or worsening symptoms develop, feel free to send additional photos.

Miri

Something hard to quantify in the plant's appearance doesn't look like Mountain-laurel, though it's hard to say what it could be (Sweetbay Magnolia comes to mind, but the bark looks more like Mountain-laurel). It looks unusually tall and upright, even for a decades-old plant (if it is that old). Shade from the beech might be at least partially responsible for its growth habit. Beech are very competitive for water in their root zone, and they cast what we'd call "dry shade," so that plus the reduction in rainfall (at least until more recently) suggests that soil moisture levels might be the only factor responsible. Leaves can be a bit distorted, though still fully functional, if there is insufficient soil moisture while they are still expanding. Once hardened-off, such leaves cannot change shape, even if a dry spell abates. There is no indication of a root infection, which if anything on a Mountain-laurel, given their intolerance for poor drainage (the typical precursor for root infection for this species), would be more likely to cause entire branches or the whole plant to die off at once.

Low sunlight levels is probably the main factor behind lack of blooms, regardless of which species this plant is. Since it is too large to move easily, and since the beech should not be thinned out, there isn't much that can be done to remedy that. Wild Mountain-laurel can grow in a range of sunlight exposures, but tend to bloom in areas where they receive several hours of direct sun (not necessarily full sun) and not only dappled light.

Miri