Cook pasta according to package directions. Meanwhile, in a large skillet, saute the peas, red pepper, carrots and garlic in 2 tablespoons oil until crisp-tender; remove and keep warm. , Add remaining oil to skillet. Saute shrimp in oil until shrimp turn pink. Return vegetables to pan; mix well. Drain pasta. Place pasta on six dinner plates. Drizzle with Alfredo sauce and top with shrimp mixture.