Preheat your oven to 220°C (430°F) and line a large rimmed baking sheet with parchment paper or lightly grease it.
Chop the bell peppers into strips and slice the zucchini thinly. Toss them together in a mixing bowl with 1 tablespoon of olive oil, a pinch of salt, and pepper. Spread the vegetables evenly across the prepared sheet pan.
In a small bowl, combine smoked paprika, red pepper flakes, salt, and pepper. Drizzle 1 tablespoon of olive oil over the shrimp and minced garlic, then sprinkle the spice mixture evenly over the shrimp. Toss gently to coat everything well.
Arrange the seasoned shrimp evenly among the vegetables on the sheet pan, making sure they are spaced out to promote even cooking.
Place the sheet pan in the oven and roast for 8-10 minutes. During this time, the shrimp will turn pink and opaque, and the vegetables will caramelize at the edges with crispy spots.
Check the shrimp; they should be firm and slightly curled, and the vegetables tender with charred edges. If needed, give the pan a gentle shake or stir halfway through roasting for even browning.
Once done, remove the sheet pan from the oven. Squeeze fresh lemon juice over the shrimp and vegetables for a bright, zesty finish.
Garnish with chopped herbs like parsley or basil if desired, then serve straight from the sheet pan or transfer to a serving dish.
Enjoy your vibrant, crispy-edge sheet pan shrimp and vegetables, perfect for a quick, flavorful dinner with minimal cleanup!