In a high speed blender or food processor combine pineapple, onion, garlic, maple syrup, vinegar, chipotle peppers, lime juice, chili powder, cumin, paprika, salt, and pepper. Blend for 1-2 minutes or until marinade is completely smooth.
2 cups pineapple, ¾ cup red onion, 2 cloves garlic, ⅓ cup pure maple syrup, 2 Tbsp. apple cider vinegar, 2 chipotle peppers in adobo sauce, 1 lime, 1 Tbsp. chili powder, 1 tsp. cumin, ½ tsp. paprika, 1 ¼ teaspoon salt, ½ tsp. pepper