Preheat oven to 375 degrees. Season chicken with taco seasoning and poultry seasoning. Bake about 30-45 minutes. Dice and reserve. Melt butter and saute onion, garlic and jalapenos until the onions are translucent. Drain and rinse beans and add to sauteed mixture, cooking for 5 minutes. Add chili powder, cumin and flour, stirring 5 minutes. Add chicken stock, half and half, salt, white pepper, hot sauce and Worchestershire sauce, cooking until mixture is thickened and beans are soft. Add diced chicken and cheese, stirring until cheese is melted. This makes a lot of chili so make sure to use a very large pot. I usually use a very large Dutch oven. The leftovers are great to freeze and use again later!