Heat oil in a large nonstick skillet over medium-high heat. Combine chipotle powder, chili powder, salt, and pork in a medium bowl. Add pork mixture to pan; sauté 4 minutes or until browned. Remove from pan.
Add pineapple to pan; bring to a boil. Cook 5 minutes or until slightly thickened. Stir in pork mixture; cook 1 minute or until pork is done.
Warm tortillas according to package directions. Spoon about 2/3 cup pork mixture down center of each tortilla. Top each serving with 2 tablespoons onion mixture and 2 tablespoons salsa; roll up.