Preheat the oven to 425°F.
In a small bowl, soak the saffron in a tablespoon of warm water for about 5 minutes to release its color and flavor.
Spread the sliced red bell pepper, zucchini, and thinly sliced red onion on a baking sheet. Drizzle with olive oil, sprinkle with salt and pepper, and toss to coat evenly.
Roast the vegetables in the preheated oven for about 15-20 minutes until they are tender and slightly charred on the edges.
While the vegetables are roasting, cook the basmati rice according to package instructions; once cooked, gently fold in the saffron water to infuse the rice with flavor and color.
Pat the shrimp dry with a paper towel and season with salt, pepper, and minced garlic.
Heat a non-stick skillet over medium-high heat. Sear the shrimp for about 1-2 minutes per side until they turn pink and are just cooked through.
To assemble the dish, spread a layer of crispy saffron rice on the plate, arrange the roasted vegetables on top, and place the seared shrimp around the rice.
Drizzle any remaining pan juices over the shrimp and garnish with a sprinkle of freshly ground pepper.
Serve immediately and enjoy the blend of textures and flavors.