B737 Captain reported a leading edge slat malfunction on final approach. The flight crew continued to an uneventful landing.

Narrative

Normal flight and descent into ZZZ. On base leg; began configuring had flaps 5 capturing the glide path. Proceeded to flaps 10 and then gear down flaps 15 at about 2000 ft.; and began rolling the speed back. Configured flaps 25 and 30; the LE in transit light was on; but that is normal as you configure the airplane. At flaps 30 and about 1500 ft.; the light was noted to still be on. We discovered on the overhead panel that the far outside LE device was orange. Looking out the window; I could tell that it wasn't in the same (or normal position) as the others. At this point; we were VFR with the runway in sight at about 1200 ft. With the flaps at 30 degrees and unsure of the Flaps/Slats behavior in the event of a go around; we elected to land. Due to the gusty crosswinds and high approach speed additive; we were very close to flap limit speed; and had a momentary flap blow up to 25; causing a too low terrain. We were still in a normal position to land and elected to continue due to the uncertainty of the flaps on a go around. The landing was uneventful and we taxied to the gate to complete the flight.