Prepare pasta according to package instructions. Drain. Line a large rimmed baking sheet with parchment paper. Spread pasta in an even layer on a prepared baking sheet; let cool completely, about 20 minutes.
Combine vegan mayonnaise, relish, onion, capers, celery, dill, lemon juice, salt, black pepper, garlic powder, and smoked paprika in a large bowl.
Add chickpeas and cooled pasta; stir well to combine. Keep covered. Refrigerate until chilled, at least 1 hour or up to 2 hours. Garnish with dill sprigs, if desired, and serve.
Keyword dairy-free tuna pasta salad, vegan tuna pasta salad, vegan tuna recipe, Vegan Tuna Salad With Chickpeas