Combine fennel seed, granulated garlic and onion, smoked paprika, salt and pepper in a small bowl. Season the chicken with the rub and drizzle with about 2 tablespoons oil.
Heat griddle or grill pan or outdoor grill to medium-high.
Heat a cast-iron skillet or medium skillet over medium-high heat. Add a tablespoon of oil, 1 turn of the pan, and bacon and render to almost crisp. Add onions and garlic, and stir 2-3 minutes. Add salt, pepper and beer, and reduce by half. Add ketchup, Worcestershire, Chipotle Tabasco, brown sugar, soy sauce, cumin, coriander, both types of beans and reduce heat to low.
Grill chicken 8-10 minutes turning occasionally. Grill lime the last minute or 2 of cook time. Douse chicken with lime then let meat rest before slicing.
Serve beans topped with sliced chicken and garnished with Fritos and green onions.