Grilled Cumin Lamb Skewers

Name: Grilled Cumin Lamb Skewers
Ingredients: 1/4 cup (about 25 grams) cumin seeds; 2 tablespoon (about 12 grams) fennel seeds; 2 tablespoon (about 18 grams) roasted peanuts; 2 tablespoon (about 18 grams) toasted sesame seeds; 1 tablespoon (about 18 grams) iodized salt or table salt; 1/2 cup (about 50 grams) chile powder, such as cayenne or gochugaru; 2 tablespoon (about 36 grams) chicken powder or msg; 2 pound lamb leg or lamb shoulder, diced into ½ inch cubes; 1 small onion, sliced lengthwise thinly; 1 large egg; 1/2 tablespoon white pepper powder