Blitz the ginger, 1 chilli, 1 lemongrass stalk, 2 tblsp of oil, lime zest and juice into a mini chopper. Blend till smooth.
STEP 2
Slice the remaining lemongrass stalks in half and thread chicken cubes onto them (like a skewer). Cover in half the marinade from the mini chopper. Leave overnight or 2 hours.
STEP 3
Put squash into roasting tin with remaining chopped chilli. Season. Roast for 30 minutes at gas 6.