Rinse the lentils and cook with the chicken stock for about 10 minutes till they are half cooked.
Peel the tomatoes by pouring a kettle of boiling water on them and leave them for 15 seconds. Drain the water, let them cool down, and take off the skins. Chop them fine with a knife.
Chop the chili, shallot, and garlic and sweat in a nob of butter. Add the tomato paste, cumin, smoked paprika, and the chopped tomatoes. Cook this for about 5 minutes and add the lentils. cook 5 minutes more and set aside.
For the poussin chickens
Separate the chicken breasts and legs from the carcass or ask the butcher to do it.
Season the chicken with pepper and salt. Fry the breasts and legs in a pan with some oil on the skin side. Do this for about 5 minutes till the skin is crispy and brown. Remove the oil from the pan, add the butter and fry the chickens on both sides for about 5 minutes till they are golden brown.
Add the cooked lentils and stew this together for about 25 minutes un till the chicken is thoroughly cooked. Season with salt and pepper.