HOUSTON — The Lakers didn’t lack for chances, but couldn’t capitalize on them during a lackluster first half that featured their first look at Trevor Ariza in a Rockets uniform and the Rockets first look at Ron Artest in a Lakers uniform.Neither was a significant factor. Ariza had six points on 2-for-10 shooting in the first half; Artest had five points on 2-for-5 shooting. Kobe Bryant led the Lakers with 17 points, and Andrew Bynum had 10. Carl Landry led the Rockets with 14 points. The Lakers shot 37.5 percent in the first half.