The effects of varying maternal dietary energy and protein levels on the embryonic development of FUNAAB – alpha chickens were studied. Maternal diets were as follows: standard exotic layer diet (2600 Kcal/kg and 16%CP; Control), high energy low protein (2800 Kcal/kg and 14%CP; HELP), high energy high protein (2800Kcal/kg and 18%CP; HEHP) and low energy high protein (2400 Kcal/kg and 18%CP; LEHP). A total of 420 fertile eggs were collected and labelled according to maternal dietary treatments. Eggs (n=87) were broken out on days 6, 10, 15, 18 and 19 of incubation to ascertain the level of embryonic development. Embryo weight, length, percentage of weight change (PEWC) and relative embryonic weight (REW) were recorded for each embryo. A significant (p<0.01) influence of maternal diet on the embryonic weight was observed on all the days studied. The LEHP diet consistently maintained lower PEWC. The HEHP group supported better (p<0.05) relative embryonic weight (REW). By the 19th day, LEHP embryos were shorter (p<0.001) than those of the other groups. It was concluded that maternal dietary energy and protein levels influence the embryonic development of the FUNAAB – alpha chicken and that the diet of combinations control or HEHP maintain good developmental trajectory of embryos.