Wash and dry all produce. Bring a large pot of salted water to a boil. Using a vegetable peeler, shave zucchini lengthwise into ribbons, rotating to shave all sides. Stop shaving once you reach seedy core; discard core. Zest lemon, then cut into halves. Mince garlic. Pick basil leaves from stems. Slice leaves into thin ribbons.

Melt 1 TBSP butter in a large pan over medium heat. Add panko and toast, tossing, until golden brown, 3-4 minutes. Remove from pan and set aside. Wipe out any leftover crumbs in pan.

Melt another 1 TBSP butter in same pan over medium-low heat. Add garlic and cook, stirring, until fragrant and butter is just starting to brown and smell nutty, about 1 minute.

Once water is boiling, add ravioli to pot. Cook until ravioli are tender and float to the top, about 4 minutes. Carefully scoop out and reserve 1/4 cup ravioli cooking water, then drain.

While ravioli cook, add shrimp to pan with garlic and increase heat to medium high. Cook, tossing, until just barely pink, 3-4 minutes. Season with salt and pepper. Add ravioli, 1 tsp lemon zest, zucchini, half the basil, a squeeze of lemon juice, and 1 TBSP butter to pan. Gently toss to combine and melt butter.

Let ravioli mixture cook until a thin sauce has formed, 1-2 minutes. (TIP: Add a splash of ravioli cooking water if mixture seems dry.) Season with salt, pepper, and more lemon juice (to taste). Divide between bowls or plates. Sprinkle with breadcrumbs, remaining basil, and a pinch of remaining zest.