Spring chicken paella

Name: Spring chicken paella
Ingredients: 6 chicken thighs, skin-on; 2 tbsp plain flour; 3 tbsp olive oil; 2 onions, finely chopped; 3 garlic cloves, finely sliced; 400g paella rice; 1 tsp sweet paprika; 2 good pinches of saffron; zest and juice 2 lemons; 1 ½l chicken stock; 200g fresh or frozen peas and broad bean (weight after podding and skinning); ½ small bunch dill, chopped; ½ small bunch mint, chopped; ½ small bunch parsley, chopped