Broja is impressing on-loan with Vitesse and played against England in their recent World Cup qualifier.
He told the Chelsea website: "It's been crazy because I was allowed the chance to play at such a young age for my international team. It's a massive honour and something amazing to play for your country. To play against some of the best players in the world and in Europe is something surreal because I'm still quite young.
"When we played against England recently, it was a chance for me to play against Harry Kane, one of the best strikers in the world, and some of the best players in the world. It's just a massive achievement for me to be on the same pitch as them."