Wash and dry the produce. Carefully peel, core, and dice the pineapple. Measure about 2 cups into a medium bowl. Then dice the red onion; chop the cilantro leaves; and slice, seed, and chop the jalapeño pepper. Place the red onion, cilantro, and jalapeño into the bowl with the fresh pineapple.
In a small bowl, blend the chili powder, salt, ground coriander, and cumin.
Slice the lime lengthwise. Squeeze the lime juice into a small bowl and measure out 1 tablespoon; discard the rest or save for later use. Pour the tablespoon of lime juice into the bowl of pineapple, onion, cilantro, and jalapeño. Using a wooden spoon, toss to combine.
Pour the seasoning mixture into the salsa mixture. Mix well.