Set-up your Q for direct cooking. Place the casserole dish (without lid) in the centre of the Q and add the oil. Pre-heat on high for ten minutes.
Once the Q is pre-heated, leave the heat setting on high. Place the half capsicum on the grill and cook for 6-8 minutes turning once. While the capsicum is grilling add the onion, garlic, tomato, chopped capsicum, squid and rice to the casserole dish. Cook for 5 minutes, stirring occasionally. Once the capsicum is grilled remove it from the Q and place in a bowl. Cover the bowl with cling wrap and set aside.
Add the stock, paprika and saffron to the casserole and stir through. Cook for 12-15 minutes on high, until the stock has reduced and the rice grains have swollen (do not stir).
While the paella is cooking, peel the skin off the capsicum, tear the flesh into thin strips and set aside.
Push the prawns, mussels and pippies partially into the rice and cook for 5 minutes.
Scatter with the peas, strips of roasted capsicum and parsley and cook for a further 5 minutes.