Place the watermelon wedges on two plates. Sprinkle them with a bit of the lime juice, some salt and chipotle powder. Set aside.
Combine the cucumber noodles in a large bowl with the remaining lime juice, more salt, chipotle powder, olive oil, agave, arugula, mint, and basil. Toss to evenly mix.
Divide the noodles between the 2 plates, placing them on top of the watermelon. Garnish the noodles with the avocado, pumpkin seeds, and some fresh pepper. Serve with lime wedges if you like. Eat immediately.