In a small bowl, mix together smoked paprika, garlic powder, cumin, salt, and pepper. Sprinkle this mixture evenly over the tilapia filets.
Cut the corn cobs into small pieces, chop the red bell pepper, and break the broccoli into florets. Spread these veggies around the tilapia on the same baking sheet.
Put the sheet pan in the oven and bake for about 15-20 minutes until the tilapia is cooked through and flakes easily with a fork. Veggies should be tender.
While it's baking, chop some cilantro and jalapeño for garnish.
Serve the tilapia and veggies hot, with a dollop of sour cream, and sprinkle cilantro and jalapeño on top for a little kick.