Yes
If either parent (only the father prior to Generation VI) knows any specific Egg moves that the baby can learn, the baby will inherit the move.
With the father being your male Chimchar, the baby will definitely learn thunderpunch if chimchar retains it in its moveset. Be careful however, as if it is low in level chimchar may forget thunder punch and learn other moves while gaining experience in the daycare, but that shouldn't matter if you don't take it out or if it is of high level.
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