Remove veggies from pan, and set aside. Add more oil to the pan, and cook sausage pieces and shrimp -you may have to do it one at a time depending on space. Add peas in the last 3 minutes of cooking as well. Set aside. Add quinoa, sea salt, pepper and the smoked paprika, saffron, tomato sauce, onions and garlic to a large bowl. Stir well to combine, then add to an oven-proof skillet. Layer veggies, sausage, and shrimp on top to serve. Heat for 5 minutes then serve hot. Garnish with lemon wedges.