Nketiah has five goals in three European Championship qualifiers after Tuesday's treble against Austria.
He has yet to start a Championship game for Leeds so far this season and is itching to prove his worth.
"It's been disappointing for me not to start in the league - I went there to play games and get games," the 20-year-old said.
"It's still early days. I think every time I've come on a done well and shown why I should be playing.
"I feel like I probably haven't been given the chances I would have liked. I'm still one of the top scorers - if not the top scorer - in the team, with such limited time so I don't think I could do much more than that.
'I think the Austria game was a good statement and a good way for me to put across a performance and hopefully I'll be starting in the next run of games. I believe I'm good enough to be playing in the team."