Season the shrimp lightly with salt and black pepper and set aside.
Melt the butter in a large skillet or sturdy pot over medium heat. Add the garlic and cook for about 30 seconds, without browning it.
Stir in the rice and toast for 1 to 2 minutes.
Add the broth, Italian seasoning, red pepper flakes, salt, and pepper and bring to a boil.
Reduce the heat to low, cover, and simmer for 15 to 18 minutes, until the rice is nearly tender and most liquid is absorbed.
Arrange the shrimp over the rice, cover, and cook for 3 to 5 minutes, until opaque and firm.
Squeeze the lemon juice over the dish, garnish with parsley, and serve.