Preheat your grill to medium-high heat.
In a large bowl, toss the potato wedges with olive oil, chili powder, garlic powder, onion powder, cumin, salt, and pepper.
Place the potato wedges on the grill and cook, flipping occasionally, until they are golden brown and tender, about 10 minutes.
In a small bowl, whisk together garlic, mayonnaise, lime juice, and chipotle chili powder.
Serve the grilled potato wedges with the chipotle-lime aioli. Enjoy!