Pop-Rock Jackson Browne: ''Lawers in Love.'' (Asylum 9 60268-1.) The poetic prowess of Jackson Browne has never been in doubt since he burst on the music scene over ten years ago. His skilled melodies and comforting voice complemented the words he wrote. He seemed to peak in 1976 with his ''Pretender'' album, and this album is his first since ''Hold Out'' hit the market three years back. ''Lawyers. . .'' may not reach the heights of craftmanship, introspection, and depth of ''Pretender,'' but it is a sure-fire likable album from a gentleman who has yet to release a bad record. His restrained, easygoing rock-and-roll style may frustrate those that want him to cut loose, but it's fun too. The title track offers an interesting look inside America, in addition to poking fun at lawyers. The song ''Say It Isn't True'' sounds like a statement on the 1980s with it's overview of the world situation and the singer's pleas to ''say it ain't true.'' A slow, mysterious sounding cut with an eerie opening bass line, it makes good use of synthesizers, which are often overused and relied upon on other records of today. One of the albums more beautiful pieces is ''Tender Is the Night,'' a slow, melodic song that ingeniously explains the goings on in people's minds during the evening. The harmonic guitar chords through the middle sections are vintage Browne, recalling a past title hit, ''The Pretender,'' perfectly. Several songs could have been played faster, with a harder rock beat, but Browne's style is like that of the former California group the Eagles, a laid-back, easy-rock sound. On ''For a Rocker'' however, Browne cuts loose a bit as he sings about life dancing to rock , recalling the '50s era. Another fine album from one of rock's most gifted lyricists.