Cut eggs in half lengthwise and spoon
yolks into a bowl. Reserve whites. Mash
yolks with a fork. Stir in mayonnaise,
mustard and black pepper.
Fold in ham and cheddar.
Fill whites with yolk mixture. If
desired, cut chives into small pieces and
arrange on top of eggs so that they
resemble a football. Refrigerate at least
1 hour before serving.