1.Prepare The Grill, Or Turn The Broiler On High. 2.Mix Oil And Chipotle Powder Together In A Small Dish. 3.Brush Onto Both Sides Of The Steak. 4.Grill For Around 5 Minutes On One Side, And 3 More Minutes On The Other. Or, Broil 3 Minutes On One Side, And 2 Minutes On The Other. 5.Remove To A Plate, Cover And Let Rest For 10 Minutes. 6.Grill The Pineapple Rings For 2-3 Minutes Per Side (Or Broil For 45 Seconds To 1 Minute Per Side). 7.Cut The Pineapple Into Small Chunks And Place In A Medium Bowl. 8.Add Red Bell Pepper, Red Onion, Cilantro And Lime Juice And Mix Together. 9.Slice The Steak Thinly, And Serve With Pineapple Salsa.