I've tested this recipe with leaner meats with success. Of the two, I prefer chicken breakfast sausage over turkey breakfast sausage as I find it has a milder flavor that meshes better with the seasonings. That's just a personal preference, but either will work. Because ground chicken and turkey have a lower fat percentage than ground pork, you'll want to make sure you spray the skillet well with cooking spray to lessen the patties sticking, or use a small amount of your favorite neutral-flavored cooking oil. And do re-spritz/oil between batches.