After searching a lot I solved it with this
Add this code to your MainActivity.java
package io.ionic.demo.pg.cap.ng;
import com.getcapacitor.BridgeActivity;
import android.webkit.WebSettings;
import android.webkit.WebView;
public class MainActivity extends BridgeActivity {
public void onResume() {
super.onResume();
WebSettings settings = bridge.getWebView().getSettings();
settings.setTextZoom(100);
settings.setSupportZoom(false);
}
}
Just do the package name changes with your own.