Cut the chicken thighs into bite-sized pieces. Dice the onion and peppers and mince the garlic.
Heat the oil in a large, wide skillet or paella pan over medium-high heat. Brown the chicken for about 6 minutes, turning once.
Add the onion, peppers, garlic, smoked paprika and turmeric and cook for 4 minutes, stirring, until the vegetables soften.
Stir in the rinsed rice and diced tomatoes, then pour in the broth and spread the rice evenly.
Bring to a boil, then lower to medium-low and simmer without stirring for 18 minutes, until most of the liquid is absorbed.
Press the shrimp and peas into the rice, cover with a lid or foil and cook 6 minutes, until the shrimp are pink and opaque and the chicken reaches 74°C (165°F).
Squeeze over the lemon juice and scatter with parsley. Let it sit 5 minutes before serving.