Bring a large pot of salted water to a boil and cook the chickpea pasta according to package directions.
Add the broccoli florets to the boiling pasta water during the last 3 minutes of cooking time.
While pasta cooks, pat the salmon fillet dry and season with a pinch of salt and black pepper.
Heat a non-stick skillet over medium-high heat and sear the salmon for 4 to 5 minutes per side until golden and cooked through.
Drain the pasta and broccoli, reserving two tablespoons of the cooking water.
Using a fork, flake the cooked salmon into bite-sized pieces.
In the same pot used for pasta, combine the cooked pasta, broccoli, flaked salmon, minced garlic, lemon juice, and lemon zest.
Toss everything together gently, adding the reserved pasta water if needed to create a light sauce, and serve immediately.